Title	Apply clustering to analyze categorical data in longitudinal studies
Author	Mohammad Mahdi Hassan, Martin Blom, Gufran Ahmad Ansari
Citation	Vol. 19  No. 4  pp. 10-19
Keywords	Empirical Survey, Longitudinal Study, Clustering, Partitioning, Grouping, Data Mining, Expert Opinion, Diversity.

Title	Deconstructing Agile Survey to Identify Agile Skeptics
Author	Entesar Alanazi, and Mohammad Mahdi Hassan
Citation	Vol. 24  No. 3  pp. 201-210
Keywords	Longitudinal Studies, Clustering, Opinion Diversity, Agile skeptics, Expert Opinion.