@article{10_4153_CJM_2013_031_9,
     author = {Izmestiev, Ivan},
     title = {Infinitesimal {Rigidity} of {Convex} {Polyhedra} through the {Second} {Derivative} of the {Hilbert{\textendash}Einstein} {Functional}},
     journal = {Canadian journal of mathematics},
     pages = {783--825},
     year = {2014},
     volume = {66},
     number = {4},
     doi = {10.4153/CJM-2013-031-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-2013-031-9/}
}