@article{VMJ_2016_18_1_a2,
     author = {E. Yu. Emelyanov and M. A. A. Marabeh},
     title = {Two measure-free versions of the {Brezis{\textendash}Lieb} lemma},
     journal = {Vladikavkazskij matemati\v{c}eskij \v{z}urnal},
     pages = {21--25},
     year = {2016},
     volume = {18},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/VMJ_2016_18_1_a2/}
}