L. Csirmaz. On the Strength of Sometimes and Always in Program Verification. Inf. Comput., 57(2/3):165-179, May/June 1983.
@article{Csirmaz83, title = {On the Strength of Sometimes and Always in Program Verification}, author = {L. Csirmaz}, year = {1983}, month = {May/June}, tags = {program verification}, researchr = {https://researchr.org/publication/Csirmaz83}, cites = {0}, citedby = {0}, journal = {Inf. Comput.}, volume = {57}, number = {2/3}, pages = {165-179}, }