@article{DCG_1994__11_3_131297,
     author = {R. Connelly and H. Servatius},
     title = {Higher-Order {Rigidity} ? {What} {Is} the {Proper} {Definition?}},
     journal = {Discrete & computational geometry},
     pages = {193--200},
     publisher = {mathdoc},
     volume = {11},
     number = {3},
     year = {1994},
     zbl = {0793.52005},
     url = {http://geodesic.mathdoc.fr/item/DCG_1994__11_3_131297/}
}