Turhan Koyuncu and Fuat Lule, Design, Manufacture and Test of a Solar Powered Audible Bird Scarer. journal = {International Journal of Agricultural and Biosystems Engineering}, [online]. World Academy of Science, Engineering and Technology. June 2009, vol. 30(6). 345 - 347 [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/15034.