@article{VTGU_2018_53_a2,
     author = {N. K. Smolentsev},
     title = {On almost (para)complex {Cayley} structures on spheres $\mathbf{S}^{2,4}$ and $\mathbf{S}^{3,3}$},
     journal = {Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mehanika},
     pages = {22--38},
     publisher = {mathdoc},
     number = {53},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VTGU_2018_53_a2/}
}