@article{1077493232,
author = {Levinson, Norman and Smith, Oliver K.},
title = {A general equation for relaxation oscillations},
journal = {Duke Math. J.},
volume = {9},
number = {1},
year = {1942},
pages = { 382-403},
language = {en},
url = {http://dml.mathdoc.fr/item/1077493232}
}
Levinson, Norman; Smith, Oliver K. A general equation for relaxation oscillations. Duke Math. J., Tome 9 (1942) no. 1, pp. 382-403. http://gdmltest.u-ga.fr/item/1077493232/