P. A. Sánchez-Pineda, I. Y. López-Pacheco, A. M. Villalba-Rodríguez, González-González R. B., R. Parra-Saldívar, and H. M. Iqbal, “Green synthesis of multi-doped carbon dots from Prickly Pear in the presence of nitrogen, phosphorus, and nitrogen-phosphorus solutions”, Nanofab, vol. 8, Dec. 2022.