1. Does the fertility of intraspecific hybrids in autogamous species improve in consequence of a heterotic effect?;Bernström;Hereditas,1950
2. A note on heterosis in a Triticum vulgare cross;Boyce;New Zealand Jour. Sci. Techn.,1948
3. The genetical basis of heterosis in maize;Brieger;Genetics,1950
4. Heterosis or hybrid vigor in oats;Coffman;Jour. Am. Soc. Agron.,1934
5. Hybrid vigor in oats;Coffman;Jour. Am. Soc. Agron.,1930