المؤلفون: Costa, L D, Budiastuti, M T H S, Sutrisno, J, Sunarto

المصدر: IOP Conference Series: Earth and Environmental Science ; volume 256, page 012026 ; ISSN 1755-1315

الاتاحة: http://dx.doi.org/10.1088/1755-1315/256/1/012026
https://iopscience.iop.org/article/10.1088/1755-1315/256/1/012026/pdf
https://iopscience.iop.org/article/10.1088/1755-1315/256/1/012026