Public Goods and the Public Domain: The Access to Knowledge in Developing Countries, and Innovation in Health, Education and Science. Forero Pineda, Clemente. 2004. The Digital Library of the Commons. University of Indiana
F. Herberg, R. Thieleczek, and H. jr. L.M.G.. Sarcomeric and Non-Sarcomeric Muscles: Basic applied research Prospects for the 90's, page 619-624. Unipress Padova, (1988)