Thitiporn Machikowa and Thanawit Kulrattanarak and Sodchol Wonprasaid, Effects of Ultrasonic Treatment on Germination of Synthetic Sunflower Seeds. journal = {International Journal of Agricultural and Biosystems Engineering}, [online]. World Academy of Science, Engineering and Technology. January 2013, vol. 73(1). 1 - 3 [viewed 20 September 2024]. Available from: https://publications.waset.org/pdf/482.