References of Differences_between_Source_Code_Versions

@InProceedings{	  johnson:substring,
  author	= {Howard Johnson},
  title		= {Substring Matching for Clone Detection and Change
		  Tracking},
  booktitle	= {Proceedings of the  International Conference on Software
		  Maintenance ~1994},
  year		= {1994},
  pages		= {120-126},
  publisher	= {IEEE Computer Society Press},
  month		= sep,
  abstract	= {Legacy systems pose problem to maintainers that can be
		  solved partially with effective tools. A prototype tool for
		  determining collections of files sharing a large amount of
		  text has been developed and applied to a 40 megabyte source
		  tree containing two releases of the gcc compiler.
		  Similarities in source code and documentation corresponding
		  to software cloning, movement and inertia between releases,
		  as well as the effects of preprocessing easily stand out in
		  a way that immediately conveys nonobvious structural
		  information to maintainer taking responsibility for such a
		  system.},
  class		= {Alteration, Differences_between_Source_Code_Versions}
}

@InProceedings{	  laski.szemer:identification,
  title		= {Identification of program modifications and its
		  applications in software maintenance},
  author	= {J. Laski and W. Szemer},
  pages		= {282--290},
  booktitle	= {Proceedings of the  International Conference on Software
		  Maintenance ~1992},
  year		= {1992},
  note		= { One of the problems in software maintenance is the
		  revalidation of modified code. Such a process should
		  preferably be restricted only to those parts of the program
		  that are affected by the modifications. In this paper a
		  formal method is described to identify modifications made
		  in a program},
  class		= {Alteration, Differences_between_Source_Code_Versions}
}