“The Effect of Plant Growth Promoting Rhizobacteria on Datura Stramonium L., Abutilon Theophrasti Med., Onopordon Acanthium L. and Verbascum Thapsus L. Seed Germination”. 2014. Pesticides and Phytomedicine Pesticidi I Fitomedicina 29 (3). https://doi.org/10.2298/pif.v29i3.5583.