@article{ZNSL_2005_329_a2,
     author = {V. A. Zalgaller},
     title = {An isoperimetric problem for tetrahedra},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {28--55},
     year = {2005},
     volume = {329},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2005_329_a2/}
}