@Book{HarrisonMcLennan.98,
  author        = {Mark Harrison and Michael McLennan},
  title         = {Effective {Tcl/Tk} Programming: Writing Better 
                   Programs with {Tcl} and {Tk}}, 
  series        = {Professional Computing Series},
  publisher     = {Addison-Wesley},
  year          = {1998},
  address       = {Reading, MA, USA}
}

@Book{Ousterhout.94,
  author        = {John K. Ousterhout},
  title         = {{Tcl} and the {Tk} {Toolkit}},
  publisher     = {Addison-Wesley},
  year          = {1994},
  series        = {Professional Computing Series},
  address       = {Reading, MA, USA}
}

