Acknowledgment

Jan Kratochvil

During my carrier I enjoyed traveling and collaboration with my colleagues and good friends in various parts of the world (Hungary, Germany, Latvia, Australia, Canada, US). Not only joint papers, I also have photographs with some of them. I was happy to coauthor papers with

• Patrizio Angelini
• Luitpold Babel
• Anthony Bonato
• Hajo Broersma
• Michael D. Coury
• Elias Dahlhaus
• Guiseppe Di Battista
• Mitre Costa Dourado
• Mike Fellows photo
• Jirka Fiala
• Fedor Fomin
• Fabrizio Frati
• John Gimbel
• Xavier Goaoc
• Petr Golovach
• Gena Hahn
• Magnus Halldorsson
• Frederic Havet
• Pavol Hell
• Petr Hlineny
• Boris Horvat
• Svante Janson
• Vit Jelinek
• Eva Jelinkova
• Konstanty Junosza-Szaniawski
• Jan Kara
• Michael Kaufmann
• Tomas Kepka
• David Kirkpatrick
• Pavel Klavik
• Martin Klazar
• Ton Kloks
• Sasha Kostochka
• Dan Kral
• Dieter Kratsch
• Mirko Krivanek photo
• Igor Kriz
• Ales Kubena
• Katharina A. Lehmann
• Bernard Lidicky
• Mathieu Liedloff
• Daniel Lokshtanov
• Zbigniew Lonc
• Anna Lubiw
• Honza Maly
• Federico Mancini
• Paul Manuel
• Jirka Matousek
• Mariusz Meszka
• Matthias Middendorf
• Peter Mihok
• Mirka Miller
• Haiko Muller photo
• Jarik Nesetril photo
• Nicolas Nisse
• Yoshio Okamoto
• Stephen Olariu
• Maurizio Patrignani
• Martin Pergel
• Frank Pfeiffer
• Tomasz Pisanski
• Svatja Poljak photo
• Atilla Por
• Andrzej Proskurowski photo
• Fabio Protti
• Tereza Przytycka
• Moshe Rosenfeld
• Peter Rossmanith
• Ignaz Rutter
• Pawel Rzazewski
• Petr Savicky
• Ingo Schiermeyer
• Andras Sebo
• Gabor Semanisin
• Chan-Su Shin
• Jozef Siran
• Zdich Skupien
• Dominique Sotteau
• Andreas Spillner
• Amarendran R. Subramanian
• Karol Suchan
• Ondra Suchy
• Jayme Luiz Szwarcfiter
• Jan Arne Telle photo
• Marek Tesar
• Zsolt Tuza photo
• Margit Voigt
• Heinz Juergen Voss
• Tomas Vyskocil
• Gerhard Woeginger
• Alexander Wolff
• David Wood
• Dainis Zeps
• Ondrej Zyka