@article{bwmeta1.element.bwnjournal-article-ccv36i3p601bwm,
author = {Cegielski, Andrzej},
title = {A generalization of the Opial's theorem},
journal = {Control and Cybernetics},
volume = {36},
year = {2007},
pages = {601-610},
zbl = {1190.47067},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-ccv36i3p601bwm}
}
Cegielski, Andrzej. A generalization of the Opial's theorem. Control and Cybernetics, Tome 36 (2007) pp. 601-610. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-ccv36i3p601bwm/