@Article{GV90,
  author	= {P. Garc\'{\i}a and E. Vidal},
  title		= {Inference of $k$-Testables Languages in the Strict Sense
		  and Applications to Syntactic Pattern Recognition},
  journal	= {IEEE Trans. on PAMI},
  year		= 1990,
  volume	= 12,
  number	= 9,
  pages		= {920--925},
  note		= {}
}