1. Studies in inheritance of physiological characters. III. Hybrid vigour in the tomato. 1. Manifestations of hybrid vigour from germination to the onset of flowering;Ashby;Ann. Bot., New Series,1937
2. Two new hybrids in Lamium;Bernström;Hereditas,1944
3. Bernström , P. 1949 Cytogenetic studies in the genus Lamium Proc. 8th Int. Congr. Genetics
4. Does the fertility of intraspecific hybrids in autogamous species improve in consequence of a heterotic effect?;Bernström;Hereditas,1950a
5. Cleisto- and chasmogamic seed setting in di- and tetraploid Lamium amplexicaule;Bernström;Hereditas,1950b