J. Nielsen

Races of Ustilago tritici and techniques for their study

J. Nielsen, 1987 .

Seven Races Identified in 15 Field Collections of Loose Smut of Wheat from the People's Republic of China

H. Huang, J. Nielsen, 1985 .

Races of Ustilago tritici identified in field collections from Eastern Siberia using Canadian and Soviet differentials

V. Tikhomirov, J. Nielsen, 1993 .