8Ian Townsend Gault: Joint development of offshore mineral resources-progress and prospects for the future, 12 Natural Resources Forum 275 (1988).
9see Hazel Fox et al. : Joint Development of Offshore Oil and Gas: A Model Agreement for States for Joint Development with Explanatory Commentary, 1989, P. 44.
10see David M. Ong: Joint development of common offshore oil and gas deposits: "mere" state practice or customary international law?, 93 AJIL772 (1999), note8.