Call for paper for the special issue of Fundamenta Informaticae on "Machines, Computations and Universality". This call for paper is open to everyone (it is not restricted to the participant of MCU '07). After the success of MCU '07 at Orleans (France), in Sept. 10-13, 2007, a special issue of Fundamenta Informaticae will be published with contributions on the topics of the conference, which include the following: Digital computation (fundamental classical models): Turing machines, register machines, word processing (groups and monoids), other machines. Digital models of computation: cellular automata, other automata, tiling of the plane, polyominoes, snakes, neural networks, molecular computations, Analog and Hybrid Computations: BSS machines, infinite cellular automata, real machines, quantum computing, computable analysis, abstract geometrical computation. In all these settings: frontiers between a decidable halting problem and an undecidable one in the various computational settings minimal universal codes: size of such a code, namely, for Turing machines, register machines, cellular automata, tilings, neural nets, Post systems computation complexity of machines with a decidable halting problem as well as universal machines, connections between decidability under some complexity class and completeness according to this class, self-reproduction and other tasks, universality and decidability in the real field. Submissions will be refereed and here are the dates for the process: submission dead-line: April 10th, 2008 (strict) notification of accetance/rejection : September, 1st, 2008 final version due: December, 1st, 2008 If you already have a published contribution in the proceedings of the conference (LNCS 4664), we draw your attention on the following: your submission must be sustantially different from the paper of LNCS: it must either contain significantly new results or important proofs that could not be included in the LNCS format; we have to strictly apply this rule. Send your submission to the following address: margens@univ-metz.fr It is important that your submission applies FI's format (see FI's site: http://fi.mimuw.edu.pl/) for your contribution to be examined. There is no apriori limit on the number of pages. The format of FI is large and, in principle, 30 pages is a reasonable limit. If you actually need more,please contact us. Jerome Durand-Lose, Maurice Margenstern, co-chairs of MCU '07