Ruiz de Galarreta, J.I., and A. Álvarez. “Six Cycles of S1 Recurrent Selection in Two Spanish Maize Synthetics”. Spanish Journal of Agricultural Research 5, no. 2 (June 1, 2007): 193-198. Accessed August 1, 2026. https://sjar.revistas.csic.es/index.php/sjar/article/view/239.