Philip L. Lehman S. Bing Yao Efficient Locking for Concurrent Operations on B-Trees. 650-670 TODS6/P650.PDF 1981 6 ACM Trans. Database Syst. 4 db/journals/tods/tods6.html#LehmanY81 http://doi.acm.org/10.1145/319628.319663 journals/tods/AstrahanBCEGGKLMMPTWW76 journals/acta/BayerM72 journals/acta/BayerS77 journals/cacm/DijkstraLMSS78 ... journals/acta/Ellis80 conf/focs/GuibasS78 books/aw/Knuth73 journals/tods/KungL80 conf/focs/KungS77 ... journals/cacm/Lamport77 ... journals/ipl/Samadi76 journals/cacm/Steele75 conf/ds/Wedekind74