@article{ZNSL_2003_299_a10,
     author = {M. D. Kovalev},
     title = {About frameworks restorable by one stress},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {169--192},
     publisher = {mathdoc},
     volume = {299},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2003_299_a10/}
}