@article{VTGU_2015_4_a5,
     author = {S. L. Fukson},
     title = {Orthogonalities in $\mathbb{Z}_p\oplus\mathbb{Z}_p$},
     journal = {Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mehanika},
     pages = {46--54},
     publisher = {mathdoc},
     number = {4},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VTGU_2015_4_a5/}
}