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Sharing in nondeterminism.- Sur les mots sans carré définis par un morphisme.- A characterization of abstract data as model-theoretic invariants.- Inherent ambiguities in families of grammars extended abstract.- Representing complexity classes by equality sets.- Supercounter machines.- Existential quantifiers in abstract data types.- A generalization of Ginsburg and Rose's characterization of G-S-M mappings.- Strict deterministic languages and controlled rewriting systems.- A string matching algorithm fast on the average.- Functional characterization of some semantic equalities inside ?-calculus.- Arbitration and queueing under limited shared storage requirements.- On the homomorphic characterizations of families of languages.- Two level grammars: CF-grammars with equation schemes.- Proving termination with multiset orderings.- One abstract accepting algorithm for all kinds of parsers.- Studies in abstract/concrete mappings in proving algorithm correctness.- A characterization of a dot-depth two analogue of generalized definite languages.- Partitioned LL(k) grammars.- Recursion schemes and generalized interpretations.- A rational theory of AFLs.- On the succinctness of different representations of languages.- A fixed-point theorem for recursive-enumerable languages and some considerations about fixed-point semantics of monadic programs.- Hierarchic index sequential search with optimal variable block size and its minimal expected number of comparisons.- A unique termination theorem for a theory with generalised commutative axioms.- Dags and Chomsky hierarchy.- Recent advances in the probabilistic analysis of graph-theoretic algorithms.- On the average stack size of regularly distributed binary trees.- On reductions of parallel programs.- On the height of derivationtrees.- The modal logic of programs.- A comparison between two variations of a pebble game on graphs.- LL(k) parsing for attributed grammars.- On eliminating nondeterminism from Turing machines which use less than logarithm worktape space.- Structure preserving transformations on non-left-recursive grammars.- The complexity of restricted minimum spanning tree problems.- A systematic approach to formal language theory through parallel rewriting.- Extending the notion of finite index.- On the complexity of general context-free language parsing and recognition.- Space-time tradeoffs for oblivious integer multiplication.- Investigating programs in terms of partial graphs.- On the power of random access machines.- An axiomatic treatment of ALGOL 68 routines.- P-selective sets, tally languages, and the behavior of polynomial time reducibilities on NP.- Constructing call-by-value continuation semantics.- A formal semantics for concurrent systems.- On constructing LL(k) parsers.- More on advice on structuring compilers and proving them correct.- Languages of nilpotent and solvable groups (extended abstract).- Unique fixed points vs. least fixed points.- A modification of the LR(k) method for constructing compact bottom-up parsers.- Optimal decomposition of linear automata.- Bracketed two-level grammars A decidable and practical approach to language definitions.