Liddicoat, J., Denham, C. R. and Paull, C. K. (1981) “Paleomagnetism of cored sediment from Lake Atitlán, Guatemala: a preliminary study”, Geofisica Internacional, 20(3), pp. 263–270. doi: 10.22201/igeof.00167169p.1981.20.3.1090.