31 Dec. 1991: intbib.bib added, intbib.bbl updated from it. 5 Jan 1992: all_brec.* added 14 Jan. 1992: intbib.bib, intbib.bbl updated (minor corrections). 24 Jan. 1992: intbib.bib, intbib.bbl updated (additions, updates). 5 May 1992: intbib.bib, intbib.bbl updated. 10 June 1992: intbib.bbl, intbib.bib, intbib.tex updated. 22 June 1992: intbib.bbl, intbib.bib updated. 7 July 1992: intbib.bbl, intbib.bib updated. 12 Aug. 1992: intbib.bbl, intbib.bib updated. 21 Sept. 1992: intbib.bbl, intbib.bib updated. 24 March 1993: intbib.bbl, intbib.bib updated. 16 April 1993: intbib.bbl, intbib.bib updated. 13 Aug. 1993: intbib.tex updated (5-digit German zip codes). 14 Aug. 1993: intbib.bbl, intbib.bib updated. 16 Feb. 1999: intbib.* updated, renamed ipmbib.*