Sukir Maryanto and  Iyan Mulyana,  Temporal Change of Fractal Dimension of Explosion Earthquakes and Harmonic Tremors at Semeru Volcano, East Java, Indonesia, using Critical Exponent Method.   journal   = {International Journal of Geological and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2008, vol. 18(6). 47 - 51
    [viewed 05 May 2024]. Available from: https://publications.waset.org/pdf/12855.