@article{VMJ_2023_25_1_a0,
     author = {S. G. Basalaev},
     title = {Mollifications of contact mappings of {Engel} group},
     journal = {Vladikavkazskij matemati\v{c}eskij \v{z}urnal},
     pages = {5--19},
     year = {2023},
     volume = {25},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/VMJ_2023_25_1_a0/}
}