@Misc{tutorial,
    author  = "Clif Flynt and Neil Madden and Arjen Markus and David N. Welton",
    title   = "The {Tcl} Tutorial",
    note    = "\url{http://www.tcl.tk/man/tcl8.5/tutorial/tcltutorial.html}",
    year    = "2009"
}
@Book{Flynt:03a,
    author  = "Clif Flynt",
    title   = "{Tcl/Tk}: A Developer's Guide",
    publisher = "Morgan Kauffman",
    month   = may,
    year    = "2003",
    isbn    = "1558608028"
}
@Book{Welch//:03a,
    author  = "Brent B. Welch and Ken Jones and Jeffrey Hobbs",
    title   = "Practical Programming in {Tcl} and {Tk}",
    edition = "4th",
    publisher = "Prentice Hall",
    month   = jun,
    year    = "2003",
    isbn    = "0130385603"
}
@Manual{Tcl.n,
	title	= "{Tcl}---{T}ool {C}ommand {L}anguage",
	key		= "Tcl",
	note	= "\url{http://www.tcl.tk/man/tcl8.6/TclCmd/Tcl.htm}"
}
@Manual{switch,
	title	= "switch(n)---{Tcl} Built-In Commands",
	key		= "switch",
	note	= "\url{http://www.tcl.tk/man/tcl8.6/TclCmd/switch.htm}"
}
@Manual{bind,
	title	= "bind(n)---{Tk} Built-In Commands",
	key		= "bind",
	note	= "\url{http://www.tcl.tk/man/tcl8.6/TkCmd/bind.htm}"
}
@Manual{scan,
	title	= "scan(n)---{Tcl} Built-In Commands",
	key		= "scan",
	note	= "\url{http://www.tcl.tk/man/tcl8.6/TclCmd/scan.htm}"
}
@Manual{format,
	title	= "format(n)---{Tcl} Built-In Commands",
	key		= "format",
	note	= "\url{http://www.tcl.tk/man/tcl8.6/TclCmd/format.htm}"
}
@Manual{clock,
	title	= "clock(n)---{Tcl} Built-In Commands",
	key		= "clock",
	note	= "\url{http://www.tcl.tk/man/tcl8.6/TclCmd/clock.htm}"
}

@InProceedings{Lewis:96a,
    author 		= "Brian T. Lewis",
    title 		= "An on-the-fly bytecode compiler for {Tcl}",
    booktitle 	= "Proceedings of 4th annual {Tcl}/{Tk} Workshop",
	note		= "\url{http://www.usenix.org/publications/library/proceedings/tcl96/full_papers/lewis/index.html}",
    year 		= "1996",
    pages 		= "103--114",
	publisher	= "{USENIX}"
}
@Misc{visitor,
	author		= "Wikipedia",
	title		= "Visitor Pattern",
	key			= "visitor",
	note		= "\url{http://en.wikipedia.org/wiki/Visitor_pattern}"
}
@Misc{bigOh,
	author		= "Wikipedia",
	title		= "Big {O} notation",
	key			= "big Oh",
	note		= "\url{http://en.wikipedia.org/wiki/Big_O_notation}"
}
@Misc{CustomSorting,
	author		= "Richard Suchenwirth et al.",
	title		= "Custom sorting",
	publisher	= "Tclers' Wiki",
	year		= "2008",
	note		= "\url{http://wiki.tcl.tk/4021}"
}
@Book{Friedl:06a,
        author          = "Jeffrey E. F. Friedl",
        title           = "Mastering Regular Expressions",
        edition         = "Third",
        month           = "August",
        year            = "2006",
        publisher       = "O'Reilly",
        isbn            = "0-596-52812-4"
}