@article{MZM_1993_54_5_a3,
     author = {P. Ya. Grushko},
     title = {An algebraic model of almost transitive differential geometry},
     journal = {Matemati\v{c}eskie zametki},
     pages = {35--44},
     year = {1993},
     volume = {54},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1993_54_5_a3/}
}