Hummer, Kim; Postman, Joseph (2000-03-01). "Black Currant Reversion Virus". Currant and Gooseberry Pests. USDA/ARS National Clonal Germplasm Repository. Archived from the original on 2012-09-26. Retrieved 2013-03-09.
Hummer, Kim; Postman, Joseph (2000-03-01). "Black Currant Reversion Virus". Currant and Gooseberry Pests. USDA/ARS National Clonal Germplasm Repository. Archived from the original on 2012-09-26. Retrieved 2013-03-09.