The families of two South Africans detained in Equatorial Guinea have welcomed efforts by the South African government to secure the release of their loved ones. Frik Potgieter, a South African ...

Center for Space Research, North-West University, Private Bag X6001, Potchefstroom 2531, South Africa ...

Methane Hydrate Production Technology Group, Energy Process Research Institute, Department of Energy and Environment, National Institute of Advanced Industrial Science and Technology (AIST), Tsukisamu ...