RAHMANI, NANIK, et al. “Production of Maltooligosaccharides from Black Potato (Coleus Tuberosus) Starch by α-Amylase from a Marine Bacterium (Brevibacterium sp.)”. Microbiology Indonesia, vol. 7, no. 3, Dec. 2013, p. 6, doi:10.5454/mi.7.3.6.