ICSID offers specialized rules of procedure for arbitration, conciliation, fact-finding, and mediation. These are the most commonly used procedural rules in investor-State dispute settlement. 2022 Rules and Regulations Convention, Regulations and Rules (Download) ICSID Additional Facility Rules and Regulations (Download) Mediation Rules and Regulations (Download) Fact-Finding Rules and Regulations (Download) 2006 Rules and Regulations Convention, Regulations and Rules (Download) ICSID Additional Facility Rules and Regulations (Download) 2003 Rules and Regulations Convention, Regulations and Rules (Download) ICSID ADDITIONAL FACILITY RULES AND REGULATIONS (DOWNLOAD) 1984 Rules and Regulations ICSID Basic Documents (Download) 1979 Rules and Regulations ICSID Additional Facility Rules and Regulations (Download) 1968 Rules and Regulations ICSID Basic Documents (Download)