@article{DAN_1982_267_3_a9,
     author = {R. K. Romanovskii},
     title = {On {Riemann} matrices of the first and second kind},
     journal = {Doklady Akademii Nauk},
     pages = {557--560},
     publisher = {mathdoc},
     volume = {267},
     number = {3},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1982_267_3_a9/}
}