Kuzucu, A., O. Soysal, and H. Ulutas. “Recurrence and Timing of Surgical Management in Spontaneous Pneumothorax”. Annals of Medical Research, vol. 12, no. 3, May 2021, pp. 0169-72, http://www.annalsmedres.org/index.php/aomr/article/view/3117.