TY - JOUR AU - Jovan D. Kečkić TI - Additions To Kamke's Treatise II: Nonlinear First And Second Order Differential Equations JO - Publications de l'Institut Mathématique PY - 1972 SP - 55 VL - _N_S_13 IS - 27 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/PIM_1972_N_S_13_27_a8/ ID - PIM_1972_N_S_13_27_a8 ER -