http://www.aftermarketnews.com/Item/37687/soms_technologies_microgreen_extended_performance_oil_filter_now_available_to_consumers.aspx

http://www.greentechmedia.com/articles/green-oil-filter-hits-market-5209.html

http://www.greentechmedia.com/press-releases/-soms-technologies-announces-retail-availability-of-microgreen-extended-performance-oil-filter-which-decreases-automotive-oil-use-by-70—5213.html

http://workshop.search-autoparts.com/kickapps/_Filter-technology-saves-money-helps-environment/blog/135614/31710.html