5Whitehouse G E, Pritsker A A B. GERT - generating functions, conditional distribution, counters, renewal times, and correlations[J]. AIIE Transactions, 1969,3.
6J. Siedersleben, Kartsruhe. Structural questions with GERT-networks[J]. Zeitschrift far Operations Research, 1981,25 : 79-89.
7Cheng C H. Fuzzy repairable reliability based on fuzzy GERT[J]. Microelectron Reliab, 1996,36, (10) : 1557 -1563.
8Zimmermann J. Time complexity of single- and identical parallel-machine scheduling with GERT network precedenee constraints [J]. Math Meth Oper Res, 1999,49:221-238.
