1. A. Bejan, S. Lorente, A.F. Miguel, A.H. Reis, Constructal theory of distribution of river sizes, Section 13.5, in Advanced Engineering Thermodynamics, 3rd edn., ed. by A. Bejan (Wiley, Hoboken, 2006)
2. R.N. Rosa, River basins: geomorphology and dynamics, in Bejan’s Constructal Theory of Shape and Structure (Évora Geophysics Center, University of Évora, Portugal, 2004)
3. A. Bejan, S. Lorente, A.F. Miguel, A.H. Reis, Constructal theory of distribution of city sizes, Section 13.4, in Advanced Engineering Thermodynamics, 3rd ed, ed. by A. Bejan (Wiley, Hoboken, 2006)
4. A. Bejan, S. Lorente, J. Lee, Unifying constructal theory of tree roots, canopies and forests. J. Theor. Biol. 254(3), 529–540 (2008)
5. A. Bejan, Two hierarchies in science: the free flow of ideas and the academy. Int. J. Des. Nat. Ecodyn. 4, 386–394 (2009)