Aloisius Louie has written a new paper for the journal Axiomathes, entitled "Functional Entailment and Immanent Causation in Relational Biology" . The abstract:
I explicate the crucial role played by efficient cause in Robert Rosen’s characterization of life, by elaborating on the topic of Aristotelian causality, and exploring the many alternate descriptions of causal and inferential entailments. In particular, I discuss the concepts of functional entailment and immanent causation, and examine how they fit into Robert Rosen’s relational-biology universe of living, anticipatory, and complex systems.
 Louie, Aloisius. 2008. Functional Entailment and Immanent Causation in Relational Biology". Axiomathes. 18(3):289-302. DOI:10.1007/s10516-008-9047-y