@book{book, title  = {{Refinement in Z and Object-Z}},

 publisher = {{Springer London}},

 url = {{}},

 year = {{2001}},

 month = {{4}},

 author = {{Derrick J and Boiten E}},

 doi = {{10.1007/978-1-4471-0257-1}},

 isbn = {{9781852332457}},

 note = {{Accessed on 2024/10/23}}}