• Molecular cloning, sequencing and homology studies of potato virus A (PVA) helper component gene from aphid transmissible (AT) and non-aphid transmissible (NAT) isolatesAndrejeva, Jelena; Merits, Andres; Kibe, Kristiina; Puurand, Ülo; Rabenstein, Frank; Järvekülg, LilianInternational Symposium 75 Years of Phytopathological and Resistance Research at Aschersleben, 12-16 June, 1995, Aschersleben, Germany : programme, abstracts, list of participants1995 / p. P3