References

Fleischmajer, R., R. Timpl, L. Tuderman, L. Raisher, M. Wiestner, J.S. Perlish & P.N. Graves 1981, Ultrastructural identification of extension aminopropeptides of type I and III collagens in human skin, Proceedings of the National Academy of Sciences of the United States of America 78, 7360-7364.