@article{TSP_2013_29_29_a11,
     author = {E. R. Rosendorn},
     title = {Rigid fixation of asymptotic quadrangle of negative {Gaussian} curvature},
     journal = {Trudy Seminara im. I.G. Petrovskogo},
     pages = {405--413},
     publisher = {mathdoc},
     volume = {29},
     number = {29},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TSP_2013_29_29_a11/}
}