@article{Smolentsev2017invariant,
author={Smolentsev, N.K.},
title={INVARIANT PSEUDO-SASAKIAN AND K-CONTACT STRUCTURES ON SEVEN-DIMENSIONAL NILPOTENT LIE GROUPS},
journal={Science Evolution},
publisher={Kemerovo State University},
year={2017},
pages={91-99},
volume={2},
issue={1},
}