It can be helpful to attach copies of the source of the legal principles (for example, the UNConvention on the Sale of Goods), and copies of any cases which may be referred to.
如一同附上相关法律依据原件之复印件（比如关于货物买卖的欧盟公约）以及可供参考的案例之复印件则更佳。
2
The UNConvention on the Law of the Sea, while giving new maritime rights and interests to states, does not break the existing maritime legal order or affect the vested maritime rights of the states.
With the adoption of United Nations Convention on jurisdictional immunities of States and their property by the UN, the disputes on practices will gradually be settled down.