Melo, P. M., Silva, L. S., Ribeiro, I., Seabra, A. R., & Carvalho, H. G. (2011). Glutamine synthetase is a molecular target of nitric oxide in root nodules of Medicago truncatula and is regulated by tyrosine nitration. Plant Physiology, 157(3), 1505 - 1517.

Pinto, R., Caseiro, C., Lemos, M., Lopes, L., et al. (2004). Prevalence of lysosomal storage diseases in Portugal. European Journal of Human Genetics, 12(2), 87 - 92.