Bereketoğlu, H. And Çelebi, O. 1991. Some oscillation theorems for perturbed nonlinear differential equations. Pure Appl. Math. Sci. , vol.33 , 47-53.

Bereketoğlu, H., & Çelebi, O., (1991). Some oscillation theorems for perturbed nonlinear differential equations. Pure Appl. Math. Sci. , vol.33, 47-53.

Bereketoğlu, HÜSEYİN, And Okay Çelebi. "Some oscillation theorems for perturbed nonlinear differential equations," Pure Appl. Math. Sci. , vol.33, 47-53, 1991

Bereketoğlu, HÜSEYİN And Çelebi, Okay. "Some oscillation theorems for perturbed nonlinear differential equations." Pure Appl. Math. Sci. , vol.33, pp.47-53, 1991

Bereketoğlu, H. And Çelebi, O. (1991) . "Some oscillation theorems for perturbed nonlinear differential equations." Pure Appl. Math. Sci. , vol.33, pp.47-53.

@article{article, author={HÜSEYİN BEREKETOĞLU And author={Okay Çelebi}, title={Some oscillation theorems for perturbed nonlinear differential equations}, journal={Pure Appl. Math. Sci.}, year=1991, pages={47-53} }