@article{702225,
title = {Boundary value problems at resonance for vector second order nonlinear ordinary differential equations},
booktitle = {Equadiff IV},
series = {GDML\_Books},
publisher = {Springer-Verlag},
address = {Berlin},
year = {1979},
pages = {[241]-249},
mrnumber = {MR0535345},
zbl = {0408.34021},
url = {http://dml.mathdoc.fr/item/702225}
}
Mawhin, J. Boundary value problems at resonance for vector second order nonlinear ordinary differential equations, dans Equadiff IV, GDML_Books, (1979), pp. [241]-249. http://gdmltest.u-ga.fr/item/702225/