Campagnolo, M.A. and Pio, R. 2012. Drastic pruning for the production of blackberry in subtropical regions. Pesquisa Agropecuaria Brasileira. 47, 7 (Aug. 2012), 936–940. DOI:https://doi.org/10.1590/S1678-3921.pab2012.v47.12104.