Ermanno Bencivenga. Strong Completeness of a Pure Free Logic. Math. Log. Q., 31(1-6):35-38, 1985. [doi]
@article{Bencivenga85, title = {Strong Completeness of a Pure Free Logic}, author = {Ermanno Bencivenga}, year = {1985}, doi = {10.1002/malq.19850310104}, url = {http://dx.doi.org/10.1002/malq.19850310104}, researchr = {https://researchr.org/publication/Bencivenga85}, cites = {0}, citedby = {0}, journal = {Math. Log. Q.}, volume = {31}, number = {1-6}, pages = {35-38}, }