@article{ZNSL_1992_201_a3,
     author = {F. L. Nazarov},
     title = {On the theorems of {Turan,} {Amrein--Berthier} and {Zigmund}},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {117--123},
     publisher = {mathdoc},
     volume = {201},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1992_201_a3/}
}