@article{AL_2006_45_1_a4,
     author = {L. L. Maksimova},
     title = {The {Projective} {Beth} {Property} and {Interpolation} in {Positive} and {Related} {Logics}},
     journal = {Algebra i logika},
     pages = {85--113},
     publisher = {mathdoc},
     volume = {45},
     number = {1},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2006_45_1_a4/}
}