@article{VTGU_2018_54_a2,
     author = {Ya. V. Slavolyubova},
     title = {Associated left-invariant contact metric structures on the $7$-dimensional {Heisenberg} group~$H^7$},
     journal = {Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mehanika},
     pages = {34--45},
     publisher = {mathdoc},
     number = {54},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VTGU_2018_54_a2/}
}