ABACUS can be obtained from
http://www.informatik.uni-koeln.de/abacus/ .
Please note that ABACUS requires a working installation of the Open Solver Interface (Osi) provided by The Computational Infrastructure for Operations Research (COIN-OR) project. Please see Section 2.3 for details. If you have any questions about ABACUS please send a mail to
abacus@informatik.uni-koeln.de .