A. Ashrafi
Faculty of Mathematics, Statistics and Computer Science, University of Semnan, Semnan, Iran
A. B. Jaafar
Institute for Mathematical Research, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
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A. Ashrafi and A. B. Jaafar, 2011. Performance Measurement of Two-Stage Production Systems with Undesirable Factors by Data Envelopment Analysis. Journal of Applied Sciences, 11: 3515-3519.
DOI: 10.3923/jas.2011.3515.3519
URL: https://scialert.net/abstract/?doi=jas.2011.3515.3519
DOI: 10.3923/jas.2011.3515.3519
URL: https://scialert.net/abstract/?doi=jas.2011.3515.3519