Camila: Prototyping and Refinement of Constructive Specifications
J. Almeida, L. Barbosa, F. Neves, и J. Oliveira. 6th International Conference on Algebraic Methods and Software Technology (AMAST'97), стр. 554--559. Sydney, Australia, Springer Lect. Notes Comp. Sci. (1349), (декабря 1997)