@article{article, title  = {{Metalevel relationship cardinalities}},

 url = {{}},

 year = {{1999}},

 month = {{1}},

 author = {{Henderson-Sellers B and Graham IM}},

 volume = {{12}},

 journal = {{JOURNAL OF OBJECT-ORIENTED PROGRAMMING}},

 issue = {{1}},

 pages = {{51-58}},

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