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@article{BUMI_1963_3_18_1_a2, author = {Bellman, Richard}, title = {A note on asymptotic behavior of differential equations.}, journal = {Bollettino della Unione matematica italiana}, pages = {16--18}, publisher = {mathdoc}, volume = {Ser. 3, 18}, number = {1}, year = {1963}, zbl = {0113.29602}, mrnumber = {151669}, language = {en}, url = {http://geodesic.mathdoc.fr/item/BUMI_1963_3_18_1_a2/} }
Bellman, Richard. A note on asymptotic behavior of differential equations.. Bollettino della Unione matematica italiana, Série 3, Tome 18 (1963) no. 1, pp. 16-18. http://geodesic.mathdoc.fr/item/BUMI_1963_3_18_1_a2/