such financing usually comes from the budgetary funds of ministries or agencies whose representatives work in a joint body and this funding is often very limited in cases where a party wishes to entrust another party with implementation of water management and protection measures or designing works or when such measures and works are to be implemented jointly this should be subject to separate contracts or agreements see for example agreement in table results of g initiated survey prepared by gtz deutsche gesellschaft fur technische zusammenarbeit for example the agreement between czechoslovakia and poland concerning the use of the water resources in frontier waters still in force for the czech republic and poland prescribes that proposals adopted by the plenipotentiaries shall not be binding until they have been approved in accordance with the law of each party the agreements may not provide for the need of such approval however the implementation of joint bodies decisions in any case usually requires the adoption of some documents by national authorities