@article{ZNSL_1974_40_a4,
     author = {N. K. Kossovski},
     title = {On solutions of systems consisting both of word equationa and of word length inequalities},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {24--29},
     publisher = {mathdoc},
     volume = {40},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1974_40_a4/}
}