@article{701064,
     title = {O neseparabel'nykh prostranstvakh s simmetricheskim bazisom},
     booktitle = {Abstracta. 4th Winter School on Abstract Analysis},
     series = {GDML\_Books},
     publisher = {Czechoslovak Academy of Sciences},
     address = {Praha},
     year = {1976},
     pages = {145-146},
     url = {http://dml.mathdoc.fr/item/701064}
}

Troyanskii, S. L. О несепарабельных пространствах с симметрическим базисом, dans Abstracta. 4th Winter School on Abstract Analysis, GDML_Books,  (1976), pp. 145-146. http://gdmltest.u-ga.fr/item/701064/