@article{FPM_2016_21_5_a8,
     author = {V. V. Ryzhikov and A. E. Troitskaya},
     title = {Mixing flows with homogeneous spectrum of multiplicity~$2$},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {191--197},
     publisher = {mathdoc},
     volume = {21},
     number = {5},
     year = {2016},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_2016_21_5_a8/}
}