• Berg, T. M. (1964). Studies on poplar mosaic virus and its relation to the host. Meded. Landb Hoogesch. Wageniugen, 64, 1.
  • Castellani, E. (1966). Report on two little-known poplar diseases. In: Breeding Pest-Resistant Trees. Proc. N.A.T.O. N.S.F. Symp. Pa St. Univ., 1964, 89.
  • Medien, H. A. Van Der (1964). Virus of poplars. Ned. Boschb Tijdschr., 36, 269.
  • Navratil, S. (1963). A contribution to the knowledge of the virus mosaic disease of poplars.) Lesn. Čas., 9, 1125.
  • Navratil, S. (1965). A contribution to the pathophysiology of host plant on the model of poplar virus mosaic. Proc. 6th European Symp. Fruit Tree Virus Diseases, Beograd..
  • Navratil, S. (1967). (Physiological changes in host plant caused by mosaic virus disease of poplars.) Lesn. Čos., 13, 1105.
  • Posnette, A. F., Cropley, R. & Ellenberger, C. (1963). The effect of virus infection on growth and crop of apple, pear, and plum tree. Phytopath. Mediterranea, 2, 61.
  • Scaramuzzi, G. (1959). Technological investigations on the wood of some hybrid poplars. Pubbl. Cent. Sper. agric. for., 3, 193.
  • Scaramuzzi, G. & Ferrari, G. (1964). Relation of wood density to wood structure in Populus. News Bull. Inst. Assn Wood Anatomists, 1, 2.