@InProceedings{	  alberich.ea:lncs:1073:2001,
  author	= {Ricardo Alberich and Peter Burmeister and Francesc
		  Rossell{\'o} and Gabriel Valiente and Boleslaw Wojdy{\l}o},
  booktitle	= {Proc.\ 5th Int.\ Workshop on Graph Grammars and their
		  Application to Computer Science},
  pages		= {1--15},
  publisher	= {Springer-Verlag},
  series	= {Lecture Notes in Computer Science},
  title		= {A Partial Algebras Approach to Graph Transformation},
  volume	= {1073},
  year		= {1996},
  abstract	= {The algebraic approach to graph transformation has been
		  based on the understanding of graphs as many-sorted unary
		  total algebras, and it has even been generalized to such
		  algebras. However, it seems natural to interpret graphs as
		  two-sorted partial algebras with countably many possible
		  source and target operations. In this paper, graph
		  transformation is studied from the point of view of partial
		  algebras. The richness of the theory of partial algebras
		  entails the existence of different approaches to
		  double-pushout and simple-pushout transformation, using
		  different notions of graph morphism, two of which
		  correspond to the usual double-pushout and single-pushout
		  approaches to graph transformation, while the other
		  approaches are novel.}
}