@article{VMJ_2005_7_3_a1,
     author = {A. V. Abanin},
     title = {On {Brannan's} problem for sufficient sets},
     journal = {Vladikavkazskij matemati\v{c}eskij \v{z}urnal},
     pages = {5--10},
     year = {2005},
     volume = {7},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMJ_2005_7_3_a1/}
}