@article{ASUO_2003_XI_1_a4,
     author = {D. Busneag and D. Piciu },
     title = {BL-algebra of fractions relative to an $\wedge $-closed
                            system},
     journal = {Analele Universit\u{a}\c{t}ii "Ovidius" Constan\c{t}a Seria Matematic\u{a}},
     publisher = {mathdoc},
     volume = {XI},
     number = {1},
     year = {2003},
     url = {http://geodesic.mathdoc.fr/item/ASUO_2003_XI_1_a4/}
}