SANDHYA. A and SUVARNALATHA DEVI. P (2017) “Extracellular biosynthesis and characterization of gold Nanoparticles using penicillium SPS and studies on Antimicrobial activity”, International Journal of Pharma and Bio Sciences, 8(3), pp. 1026–1032. doi: 10.22376/ijpbs.2017.8.3.b1026-1032.