The budget of the Organisation shall be financed:
a) by the Organisation's own resources;
b) by payments made by the Contracting States in respect of renewal fees for European patents levied in these States;
c) where necessary, by special financial contributions made by the Contracting States;
d) where appropriate, by the revenue provided for in Article 146;
e) where appropriate, and for tangible assets only, by third-party borrowings secured on land or buildings;
f) where appropriate, by third-party funding for specific projects.