EVANS, H. J. Relation of calcium nutrition to the incidence of blossom-end rot in tomatoes. J. Am. Soc. Hort. Sci. 1953, 61, 346-352
MAYNARD, D. N. The effect of calcium nutrition of tomatoes as related to the incidence and severity of blossom-end rot. Proc. Am. Soc. Hort. Sci. 1957, 69, 318-322