AZMAT, M. A., and A. A. KHAN. “Inheritance of <i>er1</i>-Based Broad-Spectrum Powdery Mildew Resistance in Pea (<i>Pisum sativum</I&gt; L.)”. Notulae Botanicae Horti Agrobotanici Cluj-Napoca, Vol. 41, no. 2, Dec. 2013, pp. 485-90, doi:10.15835/nbha4129144.