@article{rcs,
 author  = {Walter F. Tichy},
 title   = {{RCS -- A System for Version Control}},
 journal = {Software -- Practice \& Experience},
 volume  = 15,
 pages   = {637--654},
 year    = {1985},
}

@Article{sccs,
  author = 	 {Marc J. Rochkind},
  title = 	 {The Source Code Control System},
  journal =	 {IEEE Transactions on Software Engineering},
  year =	 {1975},
  volume =	 {SE-1},
  number =	 {4},
  pages =	 {364--370},
}