Amarante, Cassandro Vidal Talamini do, et al. “Multivariate Analysis of Nutritional Attributes Associated With Bitter Pit in ’Gala’ Apples”. Pesquisa Agropecuaria Brasileira, vol. 41, no. 5, May 2006, pp. 841-6, doi:10.1590/S1678-3921.pab2006.v41.7214.