This book constitutes the refereed proceedings of the 21st International Symposium on Distributed Computing, DISC 2007, held in Lemesos, Cyprus, in September 2007.

The 32 revised full papers, selected from 100 submissions, are presented together with abstracts of 3 invited papers and 9 brief announcements of ongoing works; all of them were carefully selected for inclusion in the book. The papers cover all current issues in distributed computing - theory, design, analysis, implementation, and application of distributed systems and networks - ranging from foundational and theoretical topics to algorithms and systems issues and to applications in various fields. This volume concludes with a section devoted to the 20th anniversary of the DISC conferences that took place during DISC 2006, held in Stockholm, Sweden, in September 2006.

This book constitutes the refereed proceedings of the 12th International Colloquium on Structural Information and Communication Complexity, SIROCCO 2005, held in Mont Saint-Michel, France in May 2005.

The 22 revised full papers presented were carefully reviewed and selected from 48 submissions. The papers address issues such as topics in distributed and parallel computing, information dissemination, communication complexity, interconnection networks, high speed networks, wireless networking, mobile computing, optical computing, and related areas.

This book constitutes the refereed proceedings of the 17 International Symposium on Stabilization, Safety, and Security of Distributed Systems, SSS 2015, held in Edmonton, AB, Canada, in August 2015. The 16 regular papers presented together with 8 brief announcements and 3 keynote lectures were carefully reviewed and selected from 38 submissions. The Symposium is organized in several tracks, reflecting topics to self-*properties. The tracks are self-stabilization; fault-tolerance and dependability; ad-hoc and sensor networks; mobile agents; system security in distributed computing; and formal methods and distributed algorithms.