@article{CLTM_1997_1997_1_a17, author = {S\'aez, E. and Sz\'ant\'o, I.}, title = {Familia uniparam\'etrica de un sistema c\'ubico de {Kolmogorov} con un centro is\'ocrono.}, journal = {Collectanea mathematica}, pages = {297-301}, publisher = {mathdoc}, volume = {48}, number = {3}, year = {1997}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CLTM_1997_1997_1_a17/} }