1. Introgressive hybridization.
2. Karyo-systematische Untersuchungen der Familie Gramineen;Avdulov;Bull. Appl. Bot. Suppt.,1931
3. Monographisch-Kritische Übersicht der Gattung Aegilops;Eig;Repert. Spec. Nov. Reg. Veg. Beih.,1929
4. Chromosome homologies in wheat and Aegilops;Jenkins;Amer. Jour. Bot.,1929
5. A study on the phylogeny of some species in Triticum and Aegilops, based upon comparison of the chromosomes;Kagawa;Jour. Coll. Agric. Tokyo,1929