@article{FPM_1995_1_3_a10,
     author = {M. R. Pentus},
     title = {Lambek calculus and formal grammars},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {729--751},
     publisher = {mathdoc},
     volume = {1},
     number = {3},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_1995_1_3_a10/}
}