1. Artmann S (2005) Biosemiotics as a structural science: between the forms of life and the life of forms. J Biosemiotics 1:229–265
2. Barbieri M (2014) From biosemiotics to code biology. Biol Theory 9(2):239–249
3. von Bertalanffy L (1968) General system theory: foundations, development, applications. George Braziller, New York
4. Bradie M (1986) Assessing evolutionary epistemology. Biol Philos 1:401–459
5. Bradie M, Harms W (2001) (substantive revision: 2016). Evolutionary epistemology. Stanford encyclopedia of philosophy. http://plato.stanford.edu/entries/epistemology-evolutionary/. Accessed Jan 2020