Prakash Ramanan. Conditions for lossless join. Int. J. Comput. Math., 78(4):489-498, 2001. [doi]
@article{Ramanan01, title = {Conditions for lossless join}, author = {Prakash Ramanan}, year = {2001}, doi = {10.1080/00207160108805127}, url = {http://dx.doi.org/10.1080/00207160108805127}, researchr = {https://researchr.org/publication/Ramanan01}, cites = {0}, citedby = {0}, journal = {Int. J. Comput. Math.}, volume = {78}, number = {4}, pages = {489-498}, }