1. Anttonen , M. & Karjalainen , R 2007 . Organic production: does it enhance the health-promoting compounds in berries? Report of NJF Seminar 399 . Beneficial Health Substances from Berries and Minor Crops , Piikkiö, Finland, 14–15 March 2007 , p. 13 .
2. Some studies in spring frost tolerance in black currants (Ribes nigrum L.)
3. Gordon , S.C. , Brennan , R.M. , Jones , A.T. , Fenton , B. & Birch , A.N.E. 1994 . The blackcurrant gall mite (Cecidophyopsis ribis), its biology and strategies for control . Proceedings of the Brighton Crop Protection Conference, 21–24 November (pp. 577 – 582 ). Brighton, United Kingdom .