@article{article6b6e7573,
title   = {An investigation of effect of replacing nitrate by urea in the growth and production of chlorophyll by Spirulina platensis},
author = {Danesi, Eliane Dalva Godoy and Rangel-Yagui, Carlota de Oliveira and Carvalho, João Carlos Monteiro de and Sato, Sunao},
year = {2002},
doi = {10.1016/s0961-9534(02)00054-5},
journal   = {Biomass and Bioenergy}
}