Landman, A., Robbertse, P. and Smith, A. 2007. Research note:<br><br> Vernalization requirements of <i>Lolium multiflorum</i> Lam cv. Tetrone. African Journal of Range and Forage Science. 12, 2 (Jun. 2007), 85–86. DOI:https://doi.org/10.1080/10220119.1995.9647870.