1Lars B. Mansnor, The Monitor System on WEB, XVth IALA -AISM Conference Proceedings 2002.3.
2IEC 61174: Maritime navigation and radio communication equipment system -Electronic chart display and information system (ECDIS) -Operational and performance requirements,methods of testing, and required test results. International Electro-technical Commission , Geneva.
3IHO S-52"Specification for chart content and display aspects of ECDIS". 3rd.Edition. IHB Monaco, 1993.