1. Continental-oceanic crustal transition off Southwest Africa;Austin;Bull. Am. Assoc. Pet. Geol.,1982
2. Recent authigenic phosphorite formation of the South West African shelf;Baturin,1970
3. Phosphorites on the Sea Floor: Origin, Composition and Distribution;Baturin,1982
4. Phosphorites on the sea floor and their origin;Baturin;Mar. Geol.,1979