Mark A. Roth, James E. Kirkpatrick. Algebras for Nested Relations. IEEE Data Eng. Bull., 11(3):39-47, 1988. [doi]
@article{RothK88, title = {Algebras for Nested Relations}, author = {Mark A. Roth and James E. Kirkpatrick}, year = {1988}, url = {http://sites.computer.org/debull/88SEP-CD.pdf}, tags = {e-science, algebra}, researchr = {https://researchr.org/publication/RothK88}, cites = {0}, citedby = {0}, journal = {IEEE Data Eng. Bull.}, volume = {11}, number = {3}, pages = {39-47}, }