@article{article6d461c1e,
title   = {Influence of potassium nutrition and the nitrate ammonium ratio on the putrescine and spermidine contents in banana vitroplants},
author = {Zaidan, H A and Broetto, F and Oliveira, Enio Tiago de and Gallo, Luiz Antonio and Crocomo, Otto J.},
year = {1999},
doi = {10.1080/01904169909365700},
journal   = {Journal of Plant Nutrition}
}