Mia Nazmul Haque Siddique Bala P. Amavasai Akira Ikuta Editorial: Hybrid Techniques in AI. 77-78 2007 27 Artif. Intell. Rev. 2-3 http://dx.doi.org/10.1007/s10462-008-9085-2 db/journals/air/air27.html#SiddiqueAI07