1)http://groups-beta.google.com/group/comp.lang.scheme/msg/b7075e4ca751dbdb
is now https://groups.google.com/forum/#!msg/comp.lang.scheme/9x-1PRs6dMk/29tRp0xeB7cJ 2) http://groups-beta.google.com/group/comp.lang.scheme/msg/180c7627853c288e is now https://groups.google.com/forum/#!msg/comp.lang.scheme/9x-1PRs6dMk/jig8hSd2DBgJ 3)Matthew Flatt - Composable and Compilable Macros You Want it When? is now https://www.cs.utah.edu/plt/publications/macromod.pdf 4)R. Kent Dybvig - Schez Scheme user's guide is now https://cisco.github.io/ChezScheme/csug9.5/csug.html But since it is version-dependent, perhaps is is better to give link here: https://cisco.github.io/ChezScheme/#docs 5)Robert Hieb, R. Kent Dybvig and Carl Bruggeman - Syntactic Abstraction in Scheme is now https://cs.indiana.edu/~dyb/pubs/LaSC-5-4-pp295-326.pdf 6)R. Kent Dybvig - Writing hygienic macros in syntax-case is now https://doc.lagout.org/programmation/Lisp/Scheme/Programming%20With%20Hygienic%20Macros%20-%20R%20K%20Dybvig.pdf 7)http://library.readscheme.org/page3.html is dead 8)William D. Clinger - Hygienic macros through explicit renaming. is now https://3e8.org/pub/scheme/doc/lisp-pointers/v4i4/p25-clinger.pdf 9)Eugene E. Kohlbecker, Daniel P. Friedman, Matthias Felleisen and Bruce F. Duba - Hygienic macro expansion is now https://web.cs.ucdavis.edu/~devanbu/teaching/260/kohlbecker.pdf 10)Alan Bawden - Quasiquotation in Lisp is now https://pdfs.semanticscholar.org/0bc4/5fe8b371c53b70ee4aa11615111cd7c4ef03.pdf 11)(Robert Hieb, R. Kent Dybvig - A compatible low-level macro facility) R4RS can be found here: http://people.csail.mit.edu/jaffer/r4rs.pdf 12)Matthew Flatt - Introducing an Identifier into the Lexical Context of a Macro Call http://list.cs.brown.edu/pipermail/plt-scheme/2004-October/006891.html can only be found as http://web.archive.org/web/20060905080950/http://list.cs.brown.edu/pipermail/plt-scheme/2004-October/006891.html 14)Christian Queinnec - Macroexpansion Reflective Tower https://christian.queinnec.org/PDF/towexp.pdf -- Yours sincerely, Vladimir Nikishkin
