Raymond M. Smullyan. Finite Nest Structures and Propositional Logic. Journal of Symbolic Logic, 31(3):322-324, 1966.
@article{Smullyan66a, title = {Finite Nest Structures and Propositional Logic}, author = {Raymond M. Smullyan}, year = {1966}, tags = {logic}, researchr = {https://researchr.org/publication/Smullyan66a}, cites = {0}, citedby = {0}, journal = {Journal of Symbolic Logic}, volume = {31}, number = {3}, pages = {322-324}, }