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Continue to ChatAn application of fuzzy sets to the Geological Strength Index (GSI) system used in rock engineering - https://avesis.hacettepe.edu.tr/yayin/27da14c2-bd55-4c6e-aeb4-665e61a92e0f/an-application-of-fuzzy-sets-to-the-geological-strength-index-gsi-system-used-in-rock-engineering