@article{GDZPPN002550024, title = {Computations in choice groupoids.}, journal = {Aequationes mathematicae}, volume = {20}, year = {1980}, pages = {129-132}, zbl = {0436.90003}, url = {http://dml.mathdoc.fr/item/GDZPPN002550024} }
Sertel, Murat R.; Van der Bellen, A. Computations in choice groupoids.. Aequationes mathematicae, Tome 20 (1980) pp. 129-132. http://gdmltest.u-ga.fr/item/GDZPPN002550024/