[1]
A. C. Rúbia, J. A. Sobrinho, and C. P. de Abreu, “ Plant density and pruning effects on leaf production of Morus alba cultivars ”, An. Esc. Super. Agr. Luiz de Queiroz, vol. 33, pp. 321–328, Jan. 1976, doi: 10.1590/S0071-12761976000100029.