The effect of dissolved oxygen concentration control on cell growth and antibiotic retamycin production in streptomyces olindensis So20 fermentations. - Martins, Renata Acacio; Guimarães, Luciana Maria; Pamboukian, Celso Ricardo Denser; Tonso, Aldo; Facciotti, Maria Cândida Reginato; Schmidell Netto, Willibaldo (Brazilian Journal of Chemical Engineering, 2004)