indrio, ludita. “The Effect Of Immersion Time Variation in Polyvynyl Piprolidone Against Characteristics Of Scaffold Biocomposit Of Bacterial-Hydrocysiatatic Cellulose As Candidate”. Journal of Stem Cell Research and Tissue Engineering, vol. 2, no. 2, Feb. 2019, pp. 79-86, doi:10.20473/jscrte.v2i2.11893.