Determination of 226Ra, 232Th, 40K and 235U in soil samples from bauxite core deposits in western CameroonE.J.M. Nguelem, M. M. Ndontchueng, O. Motapon, E. O. Darko and A. SimoRadioprotection, 51 3 (2016) 199-205DOI: https://doi.org/10.1051/radiopro/2016029