@article{IVM_2017_8_a9,
     author = {P. N. Klepikov},
     title = {Left-invariant {pseudo-Riemannian} metrics on four-dimensional {Lie} groups with nonzero {Schouten{\textendash}Weyl} tensor},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {92--97},
     year = {2017},
     number = {8},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2017_8_a9/}
}