@article{PPN35397434X_0061+dmdlog15,
title = {Algebraic and geometric approach to the classification of semispaces.},
journal = {Mathematica Scandinavica},
volume = {61},
year = {1987},
pages = {204-212},
zbl = {0651.52002},
url = {http://dml.mathdoc.fr/item/PPN35397434X_0061+dmdlog15}
}
Lassak, Marek; Prószynski, Andrzej. Algebraic and geometric approach to the classification of semispaces.. Mathematica Scandinavica, Tome 61 (1987) pp. 204-212. http://gdmltest.u-ga.fr/item/PPN35397434X_0061+dmdlog15/