1. The balance system of meiosis in Hieracium;Gentcheff;Hereditas,1940
2. Studies on the mechanism of parthenogenesis;Gustafsson;Hereditas,1935
3. Apomixis in higher plants. I. The mechanism of apomixis;Gustafsson;Lunds Univ. Årsskr. N.F. Avd.,1946
4. Apomixis in higher plants. II. The causal aspect of apomixis;Gustafsson;Lunds Univ. Årsskr. N.F. Avd.,1947a