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2. du Jardin , P. 2012 The Science of Plant Biostimulants - A Bibliographic Analysis ec.europa.eu/enterprise/sectors/chemicals/files/fertilizers/final_report_bio_2012_en.pdf
3. Genot , B. 2013 Biostimulants: Framing a New Tool for Agricultural Innovation www.abim.ch/fileadmin/documents-abim/Presentations_2013/ABIM_2013_6_5_Genot.pdf
4. Piper Jaffray & Co. 2013 Biological Crop Chemistry Primer: Green Shoots through Green Products, Industry Note, 2013