Tjan, A., I. M. Dwija Putra Ayusta, and D. G. Mahiswara. “Semilunar Sign of Trans-Mediastinal Herniation of Giant Bullae With Tension Hydropneumothrax”. Folia Medica Indonesiana, vol. 56, no. 4, Dec. 2020, pp. 320-4, doi:10.20473/fmi.v56i4.24652.