S. Aachhera, S. Tiwari, P. Verma, and C. S. Gahan, “TWO-STEP LEACHING OF METAL VALUES FROM DISCARDED MOBILE PHONE PRINTED CIRCUIT BOARD USING BIOGENIC FERRIC ION WITH COPPER LEACHING KINETICS”, J microb biotech food sci, vol. 15, no. 2, p. e12378, Jul. 2025.