1. A finite axiomatization of flowchart schemes;Bartha;Acta Cybernet.,1987
2. Solutions of the iteration operations and extensions of the scalar iteration operation;Bloom;SIAM J. Comput.,1980
3. The leftmost derivations of a rewriting system form a free algebraic structure;Căzănescu;Rev. Roumaine Math. Pures Appl.,1986
4. Some properties of pointed algebraic theories;Căzănescu;Stud. Cerc. Mat.,1987
5. A formal representation of flowchart schemes;Căzănescu;Preprint Ser. Math.,1987