Algebraic Specification and Program Development by Stepwise Refinement
1971 ◽
Vol 14
(4)
◽
pp. 221-227
◽
1985 ◽
Vol 15
(1)
◽
pp. 1-28
◽
2001 ◽
pp. 545-569
1981 ◽
Vol 60
(3)
◽
pp. 347-378
◽