@article{DAN_1974_217_5_a12,
     author = {R. F. Polishchuk},
     title = {Isotropic {Pfaffian} space-time systems with torsion},
     journal = {Doklady Akademii Nauk},
     pages = {1037--1040},
     publisher = {mathdoc},
     volume = {217},
     number = {5},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1974_217_5_a12/}
}