@article{ZNSL_2013_415_a6,
     author = {V. V. Makeev},
     title = {Triangular and quadrangular pyramids in a~three-dimensional normed space},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {42--50},
     publisher = {mathdoc},
     volume = {415},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2013_415_a6/}
}