@article{article, title  = {{Specifying and Refining Internal Operations in Z}},

 url = {{}},

 year = {{1998}},

 month = {{1}},

 author = {{Derrick J and Boiten E and Bowman H and Steen M}},

 doi = {{10.1007/s001650050007}},

 volume = {{10}},

 journal = {{Formal Aspects of Computing}},

 issue = {{2}},

 pages = {{125-159}},

 note = {{Accessed on 2024/12/20}}}