@article{700425,
title = {The beam operator and the Fu\v c\'\i k spectrum},
booktitle = {Proceedings of Equadiff 11},
series = {GDML\_Books},
publisher = {Comenius University Press},
address = {Bratislava},
year = {2007},
pages = {303-310},
url = {http://dml.mathdoc.fr/item/700425}
}
Nečesal, Petr. The beam operator and the Fučík spectrum, dans Proceedings of Equadiff 11, GDML_Books, (2007), pp. 303-310. http://gdmltest.u-ga.fr/item/700425/