Liubomir Chakalov (1886-1963)
Alternative spellings: Tchakaloff, Tschakaloff
Ljubomir Chakaloff
at Wikipedia.
Ljubomir Tschakaloff
at Mathematics Genealogy Project.
Lyubomir Chakalov
at MathSciNet (for those with access).
Short Biography
from
L. Tchakalov, Opera, Bulg. Acad. Sci., 1982
Bojanov, B. D.,
Lubomir Tschakaloff (1886-1963)
,
Serdica Mathematical Journal
33
(2007), iii-iv.
