Hussain, Syed Wajid, Kim Richardson, Marty Faville, and Derek Woodfield. 2006. “Production of Haploids and Double Haploids in Annual (Lolium Multiflorum) and Perennial (L. Perenne) Ryegrasses”. NZGA: Research and Practice Series 12 (January):45-48. https://doi.org/10.33584/rps.12.2006.3048.