Benchimol, R.L., Albuquerque, F.C. de and Nascimento, R.M. do (2001) “Epidemiological aspects of witches’ broom disease of cupuassu tree in the microregion of Belém, PA, Brazil”, Pesquisa Agropecuaria Brasileira, 36(2), pp. 279–283. doi:10.1590/S1678-3921.pab2001.v36.6141.