„Temperature f Gold Mineralization In Tugurejo Area and Its Surrounding, Slahung Subdistrict, Ponorogo District, East Java Province, Indonesia”, IJSHRE, vol. 10, nr. 4, apr. 2022, Data accesării: oct. 23, 2026. Disponibil la: https://ijournals.in/journal/index.php/ijshre/article/view/103