Arifullah, E., Zaim, Y., Aswan, A. and Djuhaeni, D. (2019) “Tiering Style and Its Interpretation: Ichnofabric Study in Balikpapan Formation, Kutai Basin, Indonesia”, Journal of Mathematical and Fundamental Sciences, 51(1), pp. 90-102. doi: 10.5614/j.math.fund.sci.2019.51.1.8.