Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MM2_1990__68_2_155523, author = {E. Heintze and J.-H. Eschenburg}, title = {Comparison {Theory} for {Riccati} equations.}, journal = {Manuscripta mathematica}, pages = {209--214}, publisher = {mathdoc}, volume = {68}, number = {2}, year = {1990}, zbl = {0714.53029}, url = {http://geodesic.mathdoc.fr/item/MM2_1990__68_2_155523/} }
E. Heintze; J.-H. Eschenburg. Comparison Theory for Riccati equations.. Manuscripta mathematica, Tome 68 (1990) no. 2, pp. 209-214. http://geodesic.mathdoc.fr/item/MM2_1990__68_2_155523/