, 2007, 'Categorical ontology of levels and emergent complexity: an introduction', Axiomathes 17 (3-4), 209-222.
with Brown, R. , Glazebrook, J. , 2007, 'Categorical ontology of complex spacetime structures: the emergence of life and human consciousness', Axiomathes 17 (3-4), 223-352.
with Brown, R. , Glazebrook, J. , 2007, 'A non-abelian, categorical ontology of spacetimes and quantum gravity', Axiomathes 17 (3-4), 353-408.
with Brown, R. , Glazebrook, J. , 2007, 'A conceptual construction of complexity levels theory in spacetime categorical ontology: non-abelian algebraic topology, many-valued logics and dynamic systems', Axiomathes 17 (3-4), 409-493.
, 2006, 'Robert Rosen's work and complex systems biology', Axiomathes 16 (1-2), 25-34.
with Brown, R. , Georgescu, G. , Glazebrook, J. , 2006a, 'Complex non-linear biodynamics in categories, higher dimensional algebra and Łukasiewicz–Moisil topos: transformations of neuronal, genetic and neoplastic networks', Axiomathes 16 (1-2), 65-122.