@article{SM_2000_191_5_a0,
     author = {V. V. Volchkov},
     title = {Extremal problems on {Pompeiu} sets. {II}},
     journal = {Sbornik. Mathematics},
     pages = {619--632},
     publisher = {mathdoc},
     volume = {191},
     number = {5},
     year = {2000},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2000_191_5_a0/}
}