Mohsen Pirdashti and Masoomeh Omidi and Hemmatollah Pidashti , An AHP-Delphi Multi-Criteria Usage Cases Model with Application to Citrogypsum Decisions, Case Study: Kimia Gharb Gostar Industries Company. journal = {International Journal of Biotechnology and Bioengineering}, [online]. World Academy of Science, Engineering and Technology. January 2009, vol. 25(1). 97 - 103 [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/11579.