1. First report of potato spindle tuber viroid in Costa Rica;Badilla;Plant Disease,1999
2. New potato spindle tuber viroid and tomato leaf curl geminivirus strains from a wild Solanum sp;Behjatnia;Phytopathology,1996
3. First report of Potato spindle tuber viroid in tomato in New Zealand;Elliot;Plant Disease,2001
4. Commission Directive 97/46/EC of 25 July 1997 amending Directive 95/44/EC establishing the conditions under which certain harmful organisms, plants, plant products and other objects listed in Annexes I to V to Council Directive 77/93/EEC may be introduced into or moved within the Community or certain protected zones thereof, for trial or scientific purposes and for work on varietal selections;EU;Official Journal of the European Communities,1997