122
http://www.eurekalert.org/releases/upmc-bcc061699.html
123
Lawrence R., 1994. Breastfeeding – A Guide to the Medical Profession, Fourth edition, Mossby, USA.
124
http://www.inter-medico.com/prolactin.html
125
Lawrence, R., 1994. Breastfeeding: A Guide for the Medical Profession. Fourth edition, Mossby, USA.
126
Poggi, S. H., Skinner, H., Catherine W. and others, 1998. Using scanning electron microscopy to study mineral deposits in breast tissues. American Mineralogist, 83, 1122–1126.