@article{1102906377, author = {Kim, W. J.}, title = {On the first and the second conjugate points.}, journal = {Pacific J. Math.}, volume = {61}, number = {2}, year = {1975}, pages = { 557-564}, language = {en}, url = {http://dml.mathdoc.fr/item/1102906377} }
Kim, W. J. On the first and the second conjugate points.. Pacific J. Math., Tome 61 (1975) no. 2, pp. 557-564. http://gdmltest.u-ga.fr/item/1102906377/