A. R. R. Vieira, H. J. Braga, R. C. Prado, and F. L. Ribeiro, “Determination of basal temperature and heat units of Cucumber sativus, cultivar ginga”, PAB, vol. 27, no. 6, pp. 857–864, Jun. 1992, doi: 10.1590/S1678-3921.pab1992.v27.3719.