@TechReport{Harel:2000:TR,
  author =       "David Harel and Bernhard Rumpe",
  title =        "Modeling Languages: Syntax, Semantics and All That Stuff
                  - Part {I}: The Basic Stuff",
  institution =  "Faculty of Mathematics and Computer Science, The Weizmann
                  Institute of Science, Israel",
  year =         "2000",
  number =       "MCS00-16",
  month =         sep,
}