Specific resistance factors to yellow rust in seedlings of some French wheat varieties and races of Puccinia striiformis Westend in France C. de Vallavieille-Pope, H. Picard-Formery, S. Radulovic and R. JohnsonAgronomie, 10 2 (1990) 103-113DOI: https://doi.org/10.1051/agro:19900202