Orr, I. A., Keenan, D. J., Dundee, J. W., Patterson, C. C., & Greenfield, A. A. (1983). Post-thoracotomy pain relief: Combined use of cryoprobe and morphine infusion techniques. Royal College of Surgeons of England.

Orr, I. A., D. J. Keenan, J. W. Dundee, C. C. Patterson, και A. A. Greenfield. Post-thoracotomy Pain Relief: Combined Use of Cryoprobe and Morphine Infusion Techniques. Royal College of Surgeons of England, 1983.

Orr, I. A., et al. Post-thoracotomy Pain Relief: Combined Use of Cryoprobe and Morphine Infusion Techniques. Royal College of Surgeons of England, 1983.