M. Nur, Khomsin, D. G. Pratomo, and M. Sawal, “Modulation of ETCCDI-based extreme rainfall indices by ENSO and the Indian Ocean Dipole over topographically complex North Sumatra, Indonesia”, GAC, vol. 52, no. S1, pp. S18–S24, Oct. 2026, doi: 10.3846/gac.2026.26129.