Homogeneity of Shell gas stations connected to the Shell Box

Nonato, Luis Gustavo and Contreras, Rodrigo and Louzada Neto, Francisco and Vieira, Thales and Barbosa, Adriano and Godoy, Caroline and A. V. Tojeiro, Cynthia and Milani, Eder and Ortigossa, Evandro and Oliveira, Krerley and et al.