1. Varieties of iteration theories;Bloom;SIAM J. Comput.,1988
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3. Matrix and Matricial Iteration Theories;Bloom,1990
4. Program correctness and matricial iteration theories;Bloom,1991
5. S. L. Bloom and Z. Ésik, An equational axiomatization for the regular sets, Math. Struct. Comput. Sci., to appear.