@article{01433465,
title = {Extrema constrained by },
journal = {Balkan Journal of Geometry and its Applications (BJGA)},
volume = {4},
year = {1999},
pages = {45-52},
zbl = {0990.90111},
language = {en},
url = {http://dml.mathdoc.fr/item/01433465}
}
Dogaru, Oltin; Dogaru, Vlad. Extrema constrained by . Balkan Journal of Geometry and its Applications (BJGA), Tome 4 (1999) pp. 45-52. http://gdmltest.u-ga.fr/item/01433465/