A fuzzy rate-of-return based model for portfolio selection and risk estimation. - Biljana R. Petreska; Tatjana D. Kolemisevska-Gugulovska (SMC, 2010)

Fuzzy Linear Programming - Foreign Exchange Market. - Biljana R. Petreska; Tatjana D. Kolemisevska-Gugulovska; Georgi M. Dimirovski (RSFDGrC, 2011)