@article{10_4064_ap115_2_3,
     author = {Hai Mau Le and Hong Xuan Nguyen and Hung Viet Vu},
     title = {Some characterizations of the class $\mathcal {E}_m(\varOmega )$ and applications},
     journal = {Annales Polonici Mathematici},
     pages = {145--163},
     publisher = {mathdoc},
     volume = {115},
     number = {2},
     year = {2015},
     doi = {10.4064/ap115-2-3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap115-2-3/}
}