Guapi Guamán FI, Proaño Lucero GE, Carrera Oscullo PD, Segarra Jiménez EA. The art of stamps through the Omagua culture in the Northern Amazon of Ecuador. MyS. 2025;21(4):2464-2468. Accessed November 9, 2026. https://maestroysociedad.uo.edu.cu/index.php/MyS/article/view/6702