WASET
    Sukir Maryanto and  Didik R. Santosa and  Iyan Mulyana and  Muhammad Hendrasto,  Preliminary Chaos Analyses of Explosion Earthquakes Followed by Harmonic Tremors at Semeru Volcano, East Java, Indonesia.   journal   = {International Journal of Geological and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2010, vol. 47(11). 612 - 617
    [viewed 29 March 2024]. Available from: https://publications.waset.org/pdf/9286.