A novel glucoamylase activated by manganese and calcium produced in submerged fermentation by Aspergillus phoenicis - Benassi, Vivian Machado; Pasin, Thiago Machado; Facchini, Fernanda Dell Antonio; Jorge, João Atílio; Polizeli, Maria de Lourdes Teixeira de Moraes (Journal of Basic Microbiology, 2013)