@article{SM_2004_195_6_a3,
     author = {M. D. Kovalev},
     title = {Straightened hinged frameworks},
     journal = {Sbornik. Mathematics},
     pages = {833--858},
     year = {2004},
     volume = {195},
     number = {6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2004_195_6_a3/}
}