@article{FPM_2000_6_1_a9,
     author = {M. E. Dedlovskaya},
     title = {Isotopes of the~free algebra of type $(-1,1)$ with three generators},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {121--131},
     publisher = {mathdoc},
     volume = {6},
     number = {1},
     year = {2000},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_2000_6_1_a9/}
}