@article{MZM_1986_39_5_a10,
     author = {E. O. Basangova and M. M. Dragilev},
     title = {K\"othe spaces with multiple regular bases},
     journal = {Matemati\v{c}eskie zametki},
     pages = {727--735},
     publisher = {mathdoc},
     volume = {39},
     number = {5},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1986_39_5_a10/}
}