'''Date of search''': 02nd January 2012
'''Criteria for filtering''': Only those articles related to stimulation or fracturing techniques for tight gas recovery were considered as relevant. Articles related to modeling were considered as OFF target documents. Duplicate articles were removed. There were around 24 duplicate articles.
=Taxonomy for patent analysis for tight gas recovery=
<mm>[[Tight Gas Recovery Analysis Taxonomy1.mm|800px|Interactive Mindmap|center|title Taxonomy for patent analysis]]</mm>