Bart Jacobs Object-oriented hybrid systems of coalgebras plus monoid actions. [Citation Graph (0, 0)][DBLP] Theor. Comput. Sci., 2000, v:239, n:1, pp:41-95 [Journal]
Irek Ulidowski Finite axiom systems for testing preorder and De Simone process languages. [Citation Graph (0, 0)][DBLP] Theor. Comput. Sci., 2000, v:239, n:1, pp:97-139 [Journal]