Petruccelli, Raffaella, Caterina Briccoli Bati, Pietro Carlozzi, Giulia Padovani, Nadia Vignozzi, and Giorgio Bartolini. 2015. “Use of Azolla As a Growing Medium Component in the Nursery Production of Olive Trees”. International Journal of Basic and Applied Sciences 4 (4): 333-39. https://doi.org/10.14419/ijbas.v4i4.4660.