@article{ZNSL_1981_105_a1,
     author = {A. A. Babaev},
     title = {Equality of maps and coherence theorem for biclosed categories},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {3--9},
     publisher = {mathdoc},
     volume = {105},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1981_105_a1/}
}