@ARTICLE {ORTIZ:2002s, title = {Cultivar diversity in nordic spring barley breeding (1930-1991)}, author = {Ortiz, R. and Nurminiemi, M. and Madsen, and Rognli, O. and Bj{\o}rnstad, {\AA}. }, journal = {Euphytica}, year = {2002}, volume = {123}, number = {1}, pages = {111--119}, issn = {0014-2336}, }