1) Trastek VF, Pairolero PC, Ceithaml EL, et al: Surgical management of broncholithiasis. T Thorac Cardiovasc Surg 90: 842-848, 1985
2) Conlan AA, Hurwitz SS, Nicolaou N, et al: Broncholithiasis-The endoscopic appearance and review of factors influencing management. S Afr Med J 63: 1016-1017, 1983