@article{VMUMM_2009_2_a11,
     author = {Yu. V. Savateev},
     title = {Recognition of derivability for the {Lambek} calculus with one division},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {59--62},
     publisher = {mathdoc},
     number = {2},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2009_2_a11/}
}