Joop Leo. Modeling Occurrences of Objects in Relations. Rew. Symb. Logic, 3(1):145-174, 2010. [doi]
@article{Leo10, title = {Modeling Occurrences of Objects in Relations}, author = {Joop Leo}, year = {2010}, doi = {10.1017/S1755020309990347}, url = {http://dx.doi.org/10.1017/S1755020309990347}, researchr = {https://researchr.org/publication/Leo10}, cites = {0}, citedby = {0}, journal = {Rew. Symb. Logic}, volume = {3}, number = {1}, pages = {145-174}, }