MR0385234
Graef, John R. and Spikes, Paul W.
null
Sufficient conditions for the equation {$(a(t)x\sp{\prime} )\sp{\prime} +h(t,\,x,\,x\sp{\prime} )+q(t)f(x,\,x\sp{\prime} )=e(t,\,x,\,x\sp{\prime} )$}\ to be nonoscillatory
Funkcialaj Ekvacioj. Serio Internacia
18
1975
35--40
http://fe.math.kobe-u.ac.jp/FE/FullPapers/vol18/fe18-1-5.pdf
http://fe.math.kobe-u.ac.jp/FE/FE_pdf_with_bookmark/FE11-20-en_KML/fe18-035-040/fe18-035-040.pdf
http://www.ams.org/mathscinet-getitem?mr=MR0385234
fe18-035-040
1975
Sufficient Conditions for the Equation $(a(t)x')'+h(t,x,x')+q(t)f(x,x')=e(t,x,x')$ to be Nonoscillatory
GRAEF, John R.; SPIKES, Paul W.
GRAEF, John R.; SPIKES, Paul W.
1
Graef, J. R.; Spikes, P. W.
Continuability, boundedness and asymptotic behavior of solutions of $x''+q(t)f(x)=r(t)$
Ann. Mat. Pura Appl.
4
101
1974
307- 320
Data is not found in MathSci.
Cache/Gr/Graef,x''+q(t)f(x)=r(t),Ann*,1974,1975
2
Graef, J. R.; Spikes, P. W.
On the behavior of solutions of $x''+q(t)f(x)=r(t)$
Atti Accad. Naz. Lincei Rend. Cl. Sci. Fis. Mat. Natur (8) 544-550 ().
8
54
1973
544-550
544-550
Data is not found in MathSci.
Cache/Gr/Graef,x''+q(t)f(x)=r(t),Atti*,1973,1974
3
Graef, J. R.; Spikes, P. W.
A nonoscillation result for second order ordinary differential equations
Rend. Accad. Sci. Fis. Mat. Napoli
4
41
1974
3-12
MR0486795
100
Cache/Gr/Graef,nonoscillation,Rend*,1974,1975
4
Graef, J. R.; Spikes, P. W.
Sufficient conditions for nonoscillation of a second order nonlinear differential equation
Proc. Amer. Math. Soc.
50
1975
289--292
MR0369808
100
Cache/Gr/Graef,nonoscillation,Proc*,1975,1976