@article{CMJ_2003__53_4_a19,
     author = {Jakub{\'\i}k, J\'an},
     title = {On varieties of pseudo $MV$-algebras},
     journal = {Czechoslovak Mathematical Journal},
     pages = {1031--1040},
     publisher = {mathdoc},
     volume = {53},
     number = {4},
     year = {2003},
     mrnumber = {2018848},
     zbl = {1080.06015},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_2003__53_4_a19/}
}