Wolls D.L., Blakeley J.A., Thompson C.W. Architecture of an open object-oriented database management system // Computer.-1992.-v.25.-N 10.-P. 74-82
Wolls D.L., Blakeley J.A., Thompson C.W. Architecture of an open object-oriented database management system // Computer.-1992.-v.25.-N 10.-P. 74–82 
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