B2C E-commerce for home appliances in the Brazilian market: a cost efficiency investigation through a DEA-OCT Model - Melo, Isotilia Costa; Alves Júnior, Paulo Nocera; Kodama, Tatiana Kimura; Silva, Karoline Arguelho da; Chimirri, Mirian Wawrzyniak; Rebelatto, Daisy Aparecida do Nascimento (Internext, 2020)