Exner, Martin; Klein, Günter; Rechkemmer, Andreas & Schmidt, Falk. Towards Sustainable Global Health, text, 2008; (https://digital.library.unt.edu/ark:/67531/metadc11878/m1/1/: accessed June 16, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .