Colleagues and Collaborators, Departments, Organizations, Online Reference Tools Colleagues and Collaborators Zoltán Balogh Mario Bonk Stephen Buckley Luca Capogna Estibalitz Durand Cartagena Nicola Garofalo Jasun Gong Piotr Hajlasz Hrant Hakobyan Juha Heinonen, my thesis advisor David Herron Ilkka Holopainen Petri Juutinen Antti Käenmaki Bruce Kleiner Pekka Koskela Leonid Kovalev Urs Lang Enrico Le Donne John Mackay Valentino Magnani Juan Manfredi Roberto Monti Assaf Naor Pekka Pankka Scott Pauls Kirsi Peltonen Kevin Pilgrim Pietro Poggi-Coradini Nageswari Shanmugalingam Stefan Wenger Kevin Wildrick Marshall Williams Mathematics departments and other organizations The University of Illinois at Urbana-Champaign The State University of New York at Stony Brook The University of Michigan Washington University in St. Louis The University of Helsinki and its preprint series The University of Jyväskylä and its preprint series The University of Bern Links to mathematics departments and journals worldwide maintained at Penn State University. The American Mathematics Society The National Science Foundation Online mathematics reference tools MathSciNet from the American Mathematics Society. The ArXiv. The Calculus of Variations and Geometric Measure Theory webpage at Scuola Normale Superiore and Department of Mathematics, University of Pisa. MathWorld from Wolfram Research. The Mathematics Genealogy Project from the Department of Mathematics at North Dakota State University. The MacTutor History of Mathematics archive from the Department of Mathematics at the University of St. Andrews, Scotland.