@article{BASM_2010_1_a9,
     author = {Vasile I. Ursu},
     title = {On a~product of classes of algebraic systems},
     journal = {Buletinul Academiei de \c{S}tiin\c{t}e a Republicii Moldova. Matematica},
     pages = {106--120},
     publisher = {mathdoc},
     number = {1},
     year = {2010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BASM_2010_1_a9/}
}