P.  Kour, Sahu, P., Dambhare, N. V., Rath, A. Kumar, and Mukherjee, S. Porel, ?Lead-free low-dimensional tetraalkylammonium manganese- and copper-based hybrid organic?inorganic perovskites for visual fluorometric Pb2+ ion detection?, ACS Applied Optical Materials, vol. 2, no. 8, pp. 1533?1545, 2024.