Ecogeographical differentiation in Nectandra (Lauraceae), and its historical implications Rohwer, Jens Kubitzki, Klaus 1993 - Forschungsinformationssystem der UHH
Salix martiana, a regularly hermaphrodite willow Rohwer, Jens G. Kubitzki, Klaus 1984 - Forschungsinformationssystem der UHH