@article{BASM_2007_3_a0,
     author = {Serban E. Vlad},
     title = {The intersection and the union of the asynchronous systems},
     journal = {Buletinul Academiei de \c{S}tiin\c{t}e a Republicii Moldova. Matematica},
     pages = {3--22},
     publisher = {mathdoc},
     number = {3},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BASM_2007_3_a0/}
}