@Article{GM2005,
    author = {Vasile, Cristian Ioan and Constantinescu, Alexandru},
    title = {On the quotient criterion},
    year  ={2005},
    volume = {CX},
    number = {9},
    pages = {420--422},
    journal = {{Gazeta Matematic\u a}},
    address = {Bucharest, Romania},
    note = {in Romanian}
}