@article{GDZPPN002226952, title = {Parallel-P-\"Aquidistante Regelfl\"achen.}, journal = {Manuscripta mathematica}, volume = {55}, year = {1986}, pages = {391-404}, language = {de}, url = {http://dml.mathdoc.fr/item/GDZPPN002226952} }
Valeontis, I.E. Parallel-P-Äquidistante Regelflächen.. Manuscripta mathematica, Tome 55 (1986) pp. 391-404. http://gdmltest.u-ga.fr/item/GDZPPN002226952/