Úcar, R., Arlegui, L., Belandria, N., & Torrijo, F. Estimating rock strength parameters across varied failure criteria: Application of spreadsheet and R-based orthogonal regression to triaxial test data. Elsevier.
Chicago Style (17th ed.) CitationÚcar, Roberto, Luis Arlegui, Norly Belandria, and Francisco Torrijo. Estimating Rock Strength Parameters Across Varied Failure Criteria: Application of Spreadsheet and R-based Orthogonal Regression to Triaxial Test Data. Elsevier.
MLA (9th ed.) CitationÚcar, Roberto, et al. Estimating Rock Strength Parameters Across Varied Failure Criteria: Application of Spreadsheet and R-based Orthogonal Regression to Triaxial Test Data. Elsevier.
Warning: These citations may not always be 100% accurate.