@article{01018685,
title = {An example of a flexible polyhedron with nonconstant volume in the spherical space.},
journal = {Beitr\"age zur Algebra und Geometrie},
volume = {38},
year = {1997},
pages = {11-18},
zbl = {0881.52007},
language = {en},
url = {http://dml.mathdoc.fr/item/01018685}
}
Alexandrov, Victor. An example of a flexible polyhedron with nonconstant volume in the spherical space.. Beiträge zur Algebra und Geometrie, Tome 38 (1997) pp. 11-18. http://gdmltest.u-ga.fr/item/01018685/