The triality principle as a possible cause of the periodicity of evolving systems Werner Schwemmler OriginalPaper Pages: 75 - 86
Dividing biology into disciplines: Chaos or multiformity? P. Dullemeijer OriginalPaper Pages: 87 - 93
The classification of disciplines in biology: A plea for pluralism W. J. van der Steen OriginalPaper Pages: 95 - 100