Researchr is a web site for finding, collecting, sharing, and reviewing scientific publications, for researchers by researchers.
Sign up for an account to create a profile with publication list, tag and review your related work, and share bibliographies with your co-authors.
Gwo-Jen Hwang, Patcharin Panjaburee, Wannapong Triampo, Bo-Ying Shih. A group decision approach to developing concept-effect models for diagnosing student learning problems in mathematics. BJET, 44(3):453-468, 2013. [doi]
Abstract is missing.