1. Some artificial intergeneric hybrids in the Triticeae;Ahokas;Ann. Bot. Fenn.,1970
2. Intergeneric hybrids between Hordeum vulgare L. ssp. distichum (v. Pallas, 2n= 14) and Secale cereale L. (v. Petkus, 2n = 14);Kruse;K. Vet.-*** og Landbohøjsk. Åsskr.,1967
3. Observations on some interspecific and intergeneric hybrids in Gramineae;Kruse;Hereditas,1969