Chanas S., Kamburowski J. (1981), The use of fuzzy variables in PERT; Fuzzy Sets and Systems 5(1);
 Chanas S., Zielinski P. (2001), Critical path analysis in the network with fuzzy activity times; Fuzzy
Sets and Systems 122; 195-204.
 Chang S., Tsujimura Y., Tazawa T. (1995), An efficient approach for large scale project planning
based on fuzzy delphi method; Fuzzy Sets and Systems 76; 277-288.
 Chen S. J., Hwang C. L. (1992), Fuzzy multiple attribute decision making: methods and applications;
Lecture notes in economics and mathematical systems, Springer-Verlag; Berlin, Germany.
 Dubois D., Prade H. (1988), Possibility theory: an approach to computerized processing of uncertainly;
Plenum Press; New York.
 Gazdik I. (1983), Fuzzy-network planning-FNET; IEEE Transactions Reliability 32(2); 304–313.
 Kaufmann A., Gupta M. (1985), Introduction to fuzzy arithmetic theory and applications; Van
Nostrand Reinhold; New York.
 Kuchta D. (2001), Use of fuzzy numbers in project risk (criticality) assessment; International Journal
of Project Management 19; 305-310.
 Lin F.T., Yao J.S. (2003), Fuzzy critical path method based on signed-distance ranking and statistical
confidence-interval estimates; Journal of Supercomputing 24(3); 305-325.
 Lorterapong P., Moselhi O. (1996), Project-network analysis using fuzzy sets theory; Journal of
Construction Engineering and Management 122(4); 308-318.
 McCahon C.S. (1993), Using PERT as an approximation of fuzzy project-network analysis; IEEE
Transactions on Engineering Management 40(2); 146-153.
 Nasution S.H. (1994), Fuzzy critical path method; IEEE Transactions on Systems, MAN, AND
Cybernetics 41(1); 48-57.
 Oliveros A., Robinson A. (2005), Fuzzy logic approach for activity delay analysis and schedule
updating; J. Constr. Engrg. and Mgmt. 131(1); 42-51.
 Yao J.S., Lin F.T. (2000), Fuzzy critical path method based on signed distance ranking of fuzzy
numbers; IEEE Transactions on Systems, MAN, AND Cybernetics 30(1); 76-82.
 Zimermann H.J. (1996), Fuzzy set theory-and its applications; Third Edition, Kluwer Academic