@article{AL_2011_50_4_a6,
     author = {A. S. Krivonogov},
     title = {A portion of matrices with real spectrum in a~real symplectic {Lie} algebra},
     journal = {Algebra i logika},
     pages = {547--552},
     publisher = {mathdoc},
     volume = {50},
     number = {4},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2011_50_4_a6/}
}