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@article{PIM_1981_N_S_29_43_a32, author = {Cheh-Chih Yeh}, title = {Oscillations of {N-th} {Order} {Retarder} {Differential} {Equations}}, journal = {Publications de l'Institut Math\'ematique}, pages = {293 }, publisher = {mathdoc}, volume = {_N_S_29}, number = {43}, year = {1981}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PIM_1981_N_S_29_43_a32/} }
Cheh-Chih Yeh. Oscillations of N-th Order Retarder Differential Equations. Publications de l'Institut Mathématique, _N_S_29 (1981) no. 43, p. 293 . http://geodesic.mathdoc.fr/item/PIM_1981_N_S_29_43_a32/