Edited by: Jan Thiel, Thomas Gries,
Muhammad Rabnawaz,
Susan E.M. Selke, John D. Culter, Rafael A. Auras, Muhammad Rabnawaz,
Edward D. Weil, Sergei V. Levchik,
Thomas Gries, Dieter Veit,
Edited by: Jörg Franke,
Felipe Wolff-Fabris, Volker Altstädt, Ulrich Arnold, Manfred Döring,
Edited by: Debes Bhattacharyya, Stoyko Fakirov,