Alicia Y. C. Tang and  Rukaini Hj. Abdullah and  Sharifuddin M. Zain,  Development of a Simulator for Explaining Organic Chemical Reactions Based on Qualitative Process Theory.   journal   = {International Journal of Chemical and Molecular Engineering}, [online]. World Academy of Science, Engineering and Technology.
    September 2011, vol. 57(9). 748 - 753
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