Optimizing green solid transportation with carbon cap and trade: a multi-objective two-stage approach in a type-2 Pythagorean fuzzy context. - Vincent F. Yu; Abhijit Bera; Soumen Kumar Das; Soumyakanti Manna; Prasiddhya Kumar Jhulki; Barnali Dey; S. K. Asraful Ali (Soft Comput., 2024)