1. “Simple excision in the treatment of pulmonary tuberculosis,”;Ryan;Journal of Thoracic Surgery,1952
2. “A further report on lung resection for pulmonary tuberculosis,”;Bickford;Thorax,1952
3. “Het clinische longfunctie-onderzoek,”;Hirdes;Lumax Utrecht,1951
4. “The effect of segmental resection on pulmonary function,”;van der Drift;Acta Tuberculosea Scandinavica,1952
5. “Pulmonary function tests before and after segmental resection and lobectomy,”;Kraan;Archivum Chirurgicum Neerlandicum,1952