Transactions of the Siberian Technical Institute for Physics, Tomsk University, no. 248 1966

• Tovshceyn, M.Ya. (1966) Tovshceyn, M.Ya. "PP-LYaPAS-1, A translator for the first level of LYAPAS" pp34-58
• Tovshteyn, M.Ya. (1966) Tovshteyn, M.Ya. "Representation of Input Information to PP-LYaPAS-1" pp23-33
• Zakrevskij, A.D. (1966) Zakrevskij, A.D. "The First Level of LYaPAS" pp12-22 (Russian)
• Zakrevskij, A.D. (1966) Zakrevskiy, A.D. "Elements of metalanguage for the first level of LYaPAS" pp59-65