WIKIPEDIA - Gumbat Stupa (https://en.wikipedia.org/wiki/Gumbat_Stupa )
OLIVIERI Luca Maria & FILIGENZI Anna (2018), On Gandhāran sculptural production from Swat: recent archaeological and chronological data, in Problems of Chronology in Gandhāran Art, eds. Wannaporn Rienjang & Peter Stewart
OLIVIERI L. M. et al., 2014, The Last Phases of the Urban site of Bir-kot-ghwandai (Barikot). The Buddhist sites of Gumbat and Amluk-dara (Barikot). ACT Reports and Memoirs, II, Sang-e-Meel Publisher, Lahore.
OLIVIERI Luca M. (2019), A short note on contexts and chronology of the materials from Saidu Sharif, Amluk-dara, Gumbat and Barikot (Swat) (https://www.academia.edu/72864685/A_short_note_on_contexts_and_chronology_of_the_materials_from_Saidu_Sharif_Amluk_dara_Gumbat_and_Barikot_Swat_ )