@article{1077472225, author = {Bellman, Richard}, title = {The stability of solutions of linear differential equations}, journal = {Duke Math. J.}, volume = {10}, number = {1}, year = {1943}, pages = { 643-647}, language = {en}, url = {http://dml.mathdoc.fr/item/1077472225} }
Bellman, Richard. The stability of solutions of linear differential equations. Duke Math. J., Tome 10 (1943) no. 1, pp. 643-647. http://gdmltest.u-ga.fr/item/1077472225/