Performance Enhancement of an Inverted Pyramid Solar Still Using Pebble Stones, Coir Fiber, and Sugarcane BagasseKarthik Jayanarasimhan, Navin Kumar Balasubramanian, Nagaraj M, S. Mayakannan and Giridharan M. REPJ Web Conf., 363 (2026) 01032DOI: https://doi.org/10.1051/epjconf/202636301032