Voir la notice de l'article provenant de la source Hellenic Digital Mathematics Library
@article{DEME_1966__07Α_a13, author = {G. Tsangas}, title = {Two special categories of normal rectilinear congruences}, journal = {\ensuremath{\Delta}\ensuremath{\varepsilon}\ensuremath{\lambda}\ensuremath{\tau}\ensuremath{\acute\iota}o \ensuremath{\tau}\ensuremath{\eta}\ensuremath{\varsigma} E\ensuremath{\lambda}\ensuremath{\lambda}\ensuremath{\eta}\ensuremath{\nu}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\eta}\ensuremath{\varsigma} M\ensuremath{\alpha}\ensuremath{\theta}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\eta}\ensuremath{\varsigma} E\ensuremath{\tau}\ensuremath{\alpha}\ensuremath{\iota}\ensuremath{\rho}\ensuremath{\acute\iota}\ensuremath{\alpha}\ensuremath{\varsigma} }, pages = {161-172}, publisher = {mathdoc}, volume = {07A}, year = {1966}, language = {gr}, url = {http://geodesic.mathdoc.fr/item/DEME_1966__07%CE%91_a13/} }
G. Tsangas. Two special categories of normal rectilinear congruences. Δελτίο της Ελληνικής Μαθηματικής Εταιρίας , 07Α (1966), p. 161-172. http://geodesic.mathdoc.fr/item/DEME_1966__07%CE%91_a13/