Antioxidant activities of three stingless bee propolis and green propolis types - Pazin, Wallance Moreira; Mônaco, Luciana da Mata; Soares, Ademilson Espencer Egea; Miguel, Felipe Galeti; Berretta, Andresa Aparecida; Ito, Amando Siuiti (Journal of Apicultural Research, 2017)