sygma

from The Free On-line Dictionary of Computing (8 July 2008)

SYGMA

   A symbolic generator and macro assembler by A.P. Ershov et al
   of Novosibirsk.  For the {BESM-6}, {M-220} and {Minsk-22}.

   ["SYGMA, A Symbolic Generator and Macroassembler", A.P. Ershov
   et al, in Symbol Manipulation Languages and Techniques,
   D.G. Bobrow ed, N-H 1968, pp.226- 246].