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Grindrod, Peter and Higham, Desmond and Parsons, Mark C. (2012) Bistability through triadic closure. Internet Mathematics, 8 (4). pp. 402-423. ISSN 1542-7951
Crofts, J.J. and Higham, D.J. (2011) Googling the brain : discovering hierarchical and asymmetric network structures, with applications in neuroscience. Internet Mathematics, 7 (4). pp. 233-254.