The role of ethical problems related to a brand in the purchasing decision process: An analysis of the moderating effect of complexity of purchase and mediation of perceived social risk - Lopes, Evandro Luíz; Yunes, Lucas Zimbres; Freire, Otávio Bandeira de Lamônica; Herrero, Eliane; Contreras Pinochet, Luis Hernan (Journal of Retailing and Consumer Services, 2020)