### $BEj9FCfO@J8(B • K. Fujimoto and N. Yamaoka, Oscillation constants for Euler type differential equations involving the $$p(t)$$-Laplacian, submitted. ### $BO@J8(B

1. N. Yamaoka, Oscillation and nonoscillation criteria for second-order nonlinear difference equations of Euler type, Proc. Amer. Math. Soc., 147 (2018), 2069-2081. (Impact Factor, SJR)
2. P. Řehák and N. Yamaoka, Oscillation constants for second-order nonlinear dynamic equations of Euler type on time scales, J. Difference Equ. Appl., 23 (2017), 1884-1900. (Impact Factor, SJR)
3. A. Hongyo and N. Yamaoka, General solutions of second-order linear difference equations of Euler type, Opuscula Math., 37 (2017), 389-402. (Impact Factor, SJR)
4. K. Fujimoto and N. Yamaoka, Existence and nonexistence of limit cycles for Liénard-type equations with bounded nonlinearities and $$\varphi$$-Laplacian, Commun. Contemp. Math., 19 (2017), 1650057, 21 pp. (Impact Factor, SJR)
5. O. Došlý and N. Yamaoka, Oscillation constants for second-order ordinary differential equations related to elliptic equations with $$p$$-Laplacian, Nonlinear Anal., 113 (2015), 115-136. (Impact Factor, SJR)
6. K. Fujimoto and N. Yamaoka, Global existence and nonexistence of solutions for second-order nonlinear differential equations, J. Math. Anal. Appl., 411 (2014), 707-718. (Impact Factor, SJR)
7. N. Yamaoka, Oscillation criteria for second-order nonlinear difference equations of Euler type, Adv. in Difference Equ. 2012, 2012:218, 14pp. (Impact Factor, SJR)
8. N. Yamaoka, A comparison theorem and oscillation criteria for second-order nonlinear differential equations, Appl. Math. Lett., 23 (2010), 902-906. (Impact Factor, SJR)
9. N. Yamaoka, A nonoscillation theorem for half-linear differential equations with delay nonlinear perturbations, Diff. Eq. Appl., 1 (2009), 209-217.
10. N. Yamaoka, Oscillation criteria for second-order damped nonlinear differential equations with $$p$$-Laplacian, J. Math. Anal. Appl., 325 (2007), 932-948. (Impact Factor, SJR)
11. N. Yamaoka and J. Sugie, Multilayer structures of second-order linear differential equations of Euler type and their application to nonlinear oscillations, Ukrainian Math. J., 58 (2006), 1935-1949. (Impact Factor, SJR)
12. J. Sugie and N. Yamaoka, Comparison theorems for oscillation of second-order half-linear differential equations, Acta Math. Hungar., 111 (2006), 165-179. (Impact Factor, SJR)
13. N. Yamaoka and J. Sugie, Oscillation caused by delay perturbation in half-linear differential equations, Dynam. Systems Appl., 14 (2005), 365-380. (Impact Factor, SJR)
14. J. Sugie and N. Yamaoka, Growth conditions for oscillation of nonlinear differential equations with $$p$$-Laplacian, J. Math. Anal. Appl., 306 (2005), 18-34. (Impact Factor, SJR)
15. N. Yamaoka and J. Sugie, Influence of nonlinear perturbed terms on the oscillation of elliptic equations, Proc. Amer. Math. Soc., 132 (2004), 2281-2290. (Impact Factor, SJR)
16. J. Sugie and N. Yamaoka, Oscillation of solutions of second-order nonlinear self-adjoint differential equations, J. Math. Anal. Appl., 291 (2004), 387-405. (Impact Factor, SJR)
17. J. Sugie and N. Yamaoka, Applications of phase plane analysis of a Liénard system to positive solutions of Schrödinger equations, Proc. Amer. Math. Soc., 131 (2003), 501-509. (Impact Factor, SJR)
18. J. Sugie and N. Yamaoka, Decaying positive solutions of quasilinear elliptic equations in exterior domains in $$\mathbb{R}^2$$, J. Math. Anal. Appl., 275 (2002), 288-311. (Impact Factor, SJR)
19. J. Sugie, K. Kita and N. Yamaoka, Oscillation constant of second-order non-linear self-adjoint differential equations, Ann. Mat. Pura Appl. (4), 181 (2002), 309-337. (Impact Factor, SJR)
20. J. Sugie and N. Yamaoka, An infinite sequence of nonoscillation theorems for second order nonlinear differential equations of Euler type, Nonlinear Anal., 50 (2002), 373-388. (Impact Factor, SJR)
21. J. Sugie, N. Yamaoka and Y. Obata, Nonoscillation theorems for a nonlinear self-adjoint differential equation, Nonlinear Anal., 47 (2001), 4433-4444. (Impact Factor, SJR)

### $B?tM}2r@O8&5f=j9V5fO?$HBg3X5*MW(B

1. N. Yamaoka, Oscillation constants for second-order nonlinear differential equations with p-Laplacian, $BoHyJ,J}Dx<0$NDj@-E*M}O@$H$=$N1~MQ(B, $B?tM}2r@O8&5f=j9V5fO?(B 1959 (2015), 55-73.
2. N. Yamaoka, Oscillation theorems for second-order nonlinear difference equations of Euler type, $B?7$7;kE@$+$i$N8=>]2r@O$H4X?tJ}Dx<0(B, $B?tM}2r@O8&5f=j9V5fO?(B 1750 (2011), 8-16. 3. N. Yamaoka, Comparison theorems for oscillation of nonlinear differential equations with p-Laplacian, $B4X?tJ}Dx<0$N%@%$%J%_%/%9$H?tM}%b%G%k(B, $B?tM}2r@O8&5f=j9V5fO?(B 1637 (2009), 25-31.
4. N. Yamaoka, Oscillation constants of nonlinear differential equations with delay, $B8=>]$+$i$N4X?tJ}Dx<0!$(B $B?tM}2r@O8&5f=j9V5fO?(B 1547 (2007), 87-93.
5. K. Matsumura, N. Yamaoka and J. Sugie, Oscillation problem for half-linear differential equations with periodic damping, $B4X?tJ}Dx<0$N2r$N%@%$%J%_%/%9$H?tCM%7%_%e%l!<%7%g%s!$(B $B?tM}2r@O8&5f=j9V5fO?(B 1474 (2006), 154-161. 6. N. Yamaoka and J. Sugie, Oscillation and comparison theorems for second-order half-linear differential equations, $B4X?tJ}Dx<0$HJ#;(7O!$(B $B?tM}2r@O8&5f=j9V5fO?(B 1445 (2005), 110-120. 7. N. Yamaoka, Oscillation and nonoscillation theorems for second order nonlinear differential equations with p-Laplacian, Mem. Fac. Sci. Eng. Shimane Univ. Ser. B Math. Sci., 38 (2005), 17--30. 8. N. Yamaoka and J. Sugie, Oscillation theorems for nonlinear differential equations with p-Laplacian and its application to elliptic equation, $B?tM}%b%G%k$H4X?tJ}Dx<0$N2r$N%@%$%J%_%/%9!$(B $B?tM}2r@O8&5f=j9V5fO?(B 1372 (2004), 151-158.
9. J. Sugie and N. Yamaoka, Oscillation problem for elliptic equations with nonlinear perturbed terms, $BJQJ,LdBj$H$=$N<~JU!$(B $B?tM}2r@O8&5f=j9V5fO?(B 1347 (2003), 142-155.
10. N. Yamaoka and J. Sugie, Oscillatory solutions of semilinear elliptic equations with nonlinear perturbed terms in exterior domains, $B4X?tJ}Dx<0$H?tM}%b%G%k!$(B $B?tM}2r@O8&5f=j9V5fO?(B 1309 (2003), 31-38.
11. J. Sugie, and N. Yamaoka, Applications of phase plane analysis of a Liénard system to positive solutions of Schrödinger equations, $B4X?tJ}Dx<0$N2r$N%@%$%J%_%/%9$H$=$N<~JU!$(B $B?tM}2r@O8&5f=j9V5fO?(B 1254 (2002), 132-141. 12. J. Sugie and N. Yamaoka, Nonoscillation theorems for second order nonlinear differential equations of Euler type, $B4X?tJ}Dx<0$NDj@-E*M}O@$H$=$N8=>]2r@O$X$N1~MQ!$(B $B?tM}2r@O8&5f=j9V5fO?(B 1216 (2001), 224-235.

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