Catriel Beeri, Philip A. Bernstein. Computational Problems Related to the Design of Normal Form Relational Schemas. ACM Trans. Database Syst., 4(1):30-59, 1979. [doi]
@article{BeeriB79, title = {Computational Problems Related to the Design of Normal Form Relational Schemas}, author = {Catriel Beeri and Philip A. Bernstein}, year = {1979}, doi = {10.1145/320064.320066}, url = {http://doi.acm.org/10.1145/320064.320066}, tags = {XML, XML Schema, design}, researchr = {https://researchr.org/publication/BeeriB79}, cites = {0}, citedby = {0}, journal = {ACM Trans. Database Syst.}, volume = {4}, number = {1}, pages = {30-59}, }