These bibliographic characterssets are collected and improved
by Jörg Prante <joergprante@gmail.com>

Thanks to:

Library of Congress
The Library of Congress provides an ANSEL code table file

https://www.loc.gov/marc/specifications/codetables.xml

at https://www.loc.gov/marc/specifications/specchartables.html for making the
character set implementation of ANSEL/Z39.47 possible, including east
asian code characters (EACC).

US-ASCII
The US-ASCII re-implementation was taken from the GNU classpath project.
It is provided as a demonstration of a simple single-byte character set.
The original code was licensed by the GNU Public License 2.1 (GPL)

Simple ANSEL
The ANSEL charset implementation by Piotr Andzel http://anselcharset.sourceforge.net/
has been included as "simple ANSEL". The original code was licensed under Less
GNU Public License 3 (LGPL 3.0)

MAB
The MAB Charset Java implementation was developed by Jürgen Kett of
Deutsche Nationalbibliothek (DNB) in 2004 and was licensed by GNU Public License 2 (GPL)

MAB-Diskette
This is a CP850 variant which could only be implemented by the help of
Thomas Berger http://www.gymel.com/charsets/MAB-Diskette.html

PicaCharset
An alternative PICA character set implementation of Deutsche Nationalbibliothek (DNB)
The original licence was GNU Public License 2 (GPL).

ISO 5428:1984, "Greek alphabet coded character set for bibliographic information interchange",
has been implemented by the help of https://en.wikipedia.org/wiki/ISO_5428