@article{bwmeta1.element.bwnjournal-article-apmv2i1p77bwm,
author = {Krzywicki, A. and Rzewuski, J. and Zamorski, J. and Zi\k eba, A.},
title = {Non-local problems in the calculus of variations (I)},
journal = {Annales Polonici Mathematici},
volume = {1},
year = {1955},
pages = {77-96},
zbl = {0068.31401},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-apmv2i1p77bwm}
}
Krzywicki, A.; Rzewuski, J.; Zamorski, J.; Zięba, A. Non-local problems in the calculus of variations (I). Annales Polonici Mathematici, Tome 1 (1955) pp. 77-96. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-apmv2i1p77bwm/