1. P. Törmälä J. Laiho P. Helevirta P. Rokkanen S. Vainionpää O. Böstman J. Kilpikari Proceedings of Vth International Conference on Polymers in Medicine and Surgery 1986
2. Surgical applications of biodegradable polymers in human tissues
3. B. S. Kelley R. L. Dunn T. E. Jackson A. G. Potter D. N. Ellis Transactions of the Third World Biomaterials Congress 471 1988
4. T. Pohjonen P. Törmälä J. Mikkola J. Laiho P. Helevirta H. Lähde S. Vainionpää P. Rokkanen Vlth International Conference on Polymers in Medicine and Surgery 34 1 1989
5. T. Pohjonen Processing and Properties of Absorbable Self-reinforced Polylactide Implants for Surgical Disciplines