M. Khakbazan and S. L. Scott and H. C. Block and C. D. Robins and W. P. McCaughey, Economic effects and Energy Use Efficiency of Incorporating Alfalfa and Fertilizer into Grass- Based Pasture Systems. journal = {International Journal of Agricultural and Biosystems Engineering}, [online]. World Academy of Science, Engineering and Technology. January 2009, vol. 25(1). 39 - 44 [viewed 23 September 2024]. Available from: https://publications.waset.org/pdf/7052.