ZB 2000: Formal Specification and Development in Z and B First International Conference of B and Z Users York, UK, August 29 - September 2, 2000 Proceedings - Bowen, Jonathan P.; Bowen, Jonathan P.; Dunne, Steve; Dunne, Steve; Galloway, Andy; Galloway, Andy; King, Steve; King, Steve (Springer Berlin Heidelberg : Imprint: Springer, 2000)