Musa, Ojochenemi K., et al. “X-Ray Diffraction Studies of Onshore Mud Volcanoes in Parts of the Upper Benue Trough, Northeastern Nigeria”. Geology, Geophysics and Environment, vol. 47, no. 4, Dec. 2021, pp. 203-16, https://doi.org/10.7494/geol.2021.47.4.203.