See discussions, stats, and author profiles for this publication at: http://www.researchgate.net/publication/279514425 article36 SA rev2 DATASET · JULY 2015 DOWNLOADS 79 VIEWS 40 6 AUTHORS, INCLUDING: Fidele Ntie-Kang Martin Luther University Halle-Wittenberg 75 PUBLICATIONS 294 CITATIONS SEE PROFILE James Ajeck Mbah University of Buea 31 PUBLICATIONS 170 CITATIONS SEE PROFILE Wolfgang Sippl Martin Luther University Halle-Wittenberg 180 PUBLICATIONS 2,598 CITATIONS SEE PROFILE Joseph N Yong University of Buea 16 PUBLICATIONS 85 CITATIONS SEE PROFILE Available from: Fidele Ntie-Kang Retrieved on: 09 August 2015