1. Three useful results concerning L languages without interactions;Ehrenfeucht;L Systems (Springer Lecture Notes in Computer Science),1974
2. Grammars with partial ordering of the rules;Friš;Information and Control,1968
3. The membership question for ETOL-languages is polynomially complete;Van Leeuwen,1974
4. Extremal properties of non-deterministic time-complexity classes;Van Leeuwen,1974
5. Onekotoryh svojstvah k-uslovnyh grammatik;Lomkovskaja;Naučno-Tehn. Inform. Ser.,1972