@article{05632439,
title = {Mannheim offsets of ruled surfaces.},
journal = {Mathematical Problems in Engineering},
volume = {2009},
year = {2009},
doi = {10.1155/2009/160917},
zbl = {1184.53008},
language = {en},
url = {http://dml.mathdoc.fr/item/05632439}
}
Orbay, Keziban; Kasap, Emin; Aydemir, İsmail. Mannheim offsets of ruled surfaces.. Mathematical Problems in Engineering, Tome 2009 (2009) . doi : 10.1155/2009/160917. http://gdmltest.u-ga.fr/item/05632439/