1. Barnett, O.W., Mosaic of blackjack oak. Pl. Dis. Reptr55 (1971) 411.
2. Biddle, P.G., and Tinsley, T.W., Virus diseases of conifers in Great Britain. Nature219 (1968) 1387–1388.
3. Biddle, P.G., and Tinsley, T.W., Poplar mosaic virus. Descriptions of plant viruses No. 75, pp. 1–3. Commonw. Mycol. Inst., Ass. appl. Biol., Kew 1971.
4. Blattný, C., Contribution to the detection of virus diseases in woody plants. Proc. 5th Conf. Czech. Pl. Virologists, Prague 1962, pp. 155–161. Publ. House Czech. Acad. Sci. (1964).
5. Blattný, C., and Procházkova, Z., Beitrag zur Kenntnis der Virosen und virusverdächtigen Erkrankungen der Eiche (Quercus spp.). R. roum. Biol. Ser. Bot.11 (1966) 39–42.