conf/pods/87 Li-Yan Yuan Z. Meral Özsoyoglu Logical Design of Relational Database Systems. 38-47 1987 PODS db/conf/pods/pods87.html#YuanO87 http://doi.acm.org/10.1145/28659.28663 db/conf/pods/YuanO87.html journals/anthology/cd1-3:PODS87/P038.PDF journals/anthology/dvd1:text/1-3/PODS87/P038.PDF journals/tods/BeeriB79 journals/tods/Bernstein76 journals/jacm/BeeriFMY83 journals/tods/BeeriK86 journals/tods/Fagin77 journals/jacm/Galil82 conf/vldb/GrahneR83 journals/tods/Katsuno84 journals/tods/Lien81 journals/jacm/Lien82 journals/tods/OzsoyogluY87a conf/pods/OzsoyogluY85 books/cs/Ullman82 conf/pods/YuanO86 ...