@article{ZNSL_1971_20_a4,
     author = {M. M. Kipnis},
     title = {On realizations of predicate formulas},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {40--48},
     publisher = {mathdoc},
     volume = {20},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1971_20_a4/}
}