@article{TMF_1998_115_2_a1,
     author = {V. P. Akulov and S. A. Duplij and V. V. Chitov},
     title = {Differential calculus for $q$-deformed twistors},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {177--184},
     publisher = {mathdoc},
     volume = {115},
     number = {2},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1998_115_2_a1/}
}