@article{VMJ_2008_10_2_a2,
     author = {V. P. Kondakov and A. I. Efimov},
     title = {On classes of {K\"othe} spaces in which every complemented subspace has a basis},
     journal = {Vladikavkazskij matemati\v{c}eskij \v{z}urnal},
     pages = {21--29},
     publisher = {mathdoc},
     volume = {10},
     number = {2},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMJ_2008_10_2_a2/}
}