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\documentclass{acmabs}

\begin{document}

\Journal{Journal of the ACM}

\refkey{Galil95}

\title{A Constant-Time Optimal Parallel String-Matching Algorithm}

\author{Zvi Galil}

\Pages{908--918}

\Month{July}

\Year{1995}

\Volume{42}

\Number{4}

\maketitle

\begin{abstract}

Given a pattern string, we describe a way to preprocess it. We design a
  CRCW-PRAM constant-time optimal parallel algorithm for finding all
  occurrences of the (preprocessed) pattern in any given text.

\end{abstract}

\begin{categories}

F.2.2 [computations on discrete structures]

\end{categories}

\begin{terms}

Algorithms, Theory

\end{terms}

\begin{keywords}

Constant time, CRCW-PRAM, lion hunting, optimal parallel algorithm, period,
  string matching

\end{keywords}

\end{document}