@article{VMJ_2011_13_3_a0,
     author = {O. P. Gladunova and E. D. Rodionov and V. V. Slavskii},
     title = {On half conformally flat 4-dimensional {Lie} groups},
     journal = {Vladikavkazskij matemati\v{c}eskij \v{z}urnal},
     pages = {3--16},
     publisher = {mathdoc},
     volume = {13},
     number = {3},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMJ_2011_13_3_a0/}
}