@article{IM2_2013_77_1_a3,
     author = {V. A. Krasnov},
     title = {Real $M$-triquadrics},
     journal = {Izvestiya. Mathematics },
     pages = {30--43},
     publisher = {mathdoc},
     volume = {77},
     number = {1},
     year = {2013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2013_77_1_a3/}
}