@article{02100146,
title = {Extrema with constraints on points and/or velocities.},
journal = {Balkan Journal of Geometry and its Applications (BJGA)},
volume = {8},
year = {2003},
pages = {115-123},
zbl = {1139.49302},
language = {en},
url = {http://dml.mathdoc.fr/item/02100146}
}
Udrişte, C.; Dogaru, O.; Ferrara, M.; Ţevy, I. Extrema with constraints on points and/or velocities.. Balkan Journal of Geometry and its Applications (BJGA), Tome 8 (2003) pp. 115-123. http://gdmltest.u-ga.fr/item/02100146/