@article{1183524671,
author = {Chen, Kuo-Tsai},
title = {An expansion formula for differential equations},
journal = {Bull. Amer. Math. Soc.},
volume = {68},
number = {6},
year = {1962},
pages = { 341-344},
language = {en},
url = {http://dml.mathdoc.fr/item/1183524671}
}
Chen, Kuo-Tsai. An expansion formula for differential equations. Bull. Amer. Math. Soc., Tome 68 (1962) no. 6, pp. 341-344. http://gdmltest.u-ga.fr/item/1183524671/