@article{ZNSL_1999_261_a6,
     author = {V. A. Zalgaller and A. L. Iones},
     title = {On the triangle of the least perimeter circumscribed about a convex $n$-gon},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {76--101},
     year = {1999},
     volume = {261},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1999_261_a6/}
}