@article{ASUO_2003_XI_2_a12,
     author = {Emil Popescu },
     title = {A class of {Dirichlet} forms generated by pseudo differential operators},
     journal = {Analele Universit\u{a}\c{t}ii "Ovidius" Constan\c{t}a Seria Matematic\u{a}},
     publisher = {mathdoc},
     volume = {XI},
     number = {2},
     year = {2003},
     url = {http://geodesic.mathdoc.fr/item/ASUO_2003_XI_2_a12/}
}