@article{1183497555,
author = {Langer, R. E.},
title = {The asymptotic solutions of ordinary linear differential equations of the second order, with special reference to the Stokes phenomenon},
journal = {Bull. Amer. Math. Soc.},
volume = {40},
number = {12},
year = {1934},
pages = { 545-582},
language = {en},
url = {http://dml.mathdoc.fr/item/1183497555}
}
Langer, R. E. The asymptotic solutions of ordinary linear differential equations of the second order, with special reference to the Stokes phenomenon. Bull. Amer. Math. Soc., Tome 40 (1934) no. 12, pp. 545-582. http://gdmltest.u-ga.fr/item/1183497555/