MONZON ALVAREZ, G. I.; PACHECO QUICO, M. ÁNGEL; MIAURY VILCA, A. R.; PINTO POMAREDA, H. L.; TORRES AZA, S. F. Occupational risks in public cleaning personnel during Covid-19. Universidad Ciencia y Tecnología, v. 25, n. 108, p. 66-72, 5 Mar. 2021.