@Article{ authors = " Julian Ławrynowicz, Jakub Rembieliński", title = "Complete Classification for Pseudo-Euclidean Hurwitz Pairs Including the Symmetry Operations ", journal = "Bulletin de la Société des Science et des Lettres de Łódź. Serie: Recherches sur les Déformations", issue = "1986 / Numer 39", pages = "1 - 15" }