A Chwatal, G. Raidl:
"Determining orbital elements of extrasolar planets by evolution strategies.";
in: "Computer Aided Systems Theory - EUROCAST 2007", R. Moreno-Díaz (ed.); Springer, Lecture Notes in Computer Science, Vol. 4739, 2007, ISBN: 978-3-540-75866-2, 870 - 877.