@inproceedings{inproceedings20059780,
title   = {Sulfur in soil and lemon (citrus lemon burm.) Leaf grown in gypsum amended soil},
author = {Prochnow, Luís Ignácio and Boaretto, Antonio Enedi and Muraoka, Takashi and Vitti, G C},
year = {1992},
booktitle   = {International Colloquium for the Optimization of Plant Nutrition}
}