Broadus, James M., et al. The Oceans and Environmental Security: Shared U.S. and Russian Perspectives, (Google BooksАрхивная копия от 3 августа 2020 на Wayback Machine), p. 103, Island Press, 1994, (ISBN 1559632356), accessed October 25, 2008.
Broadus, James M., et al. The Oceans and Environmental Security: Shared U.S. and Russian Perspectives, (Google BooksАрхивная копия от 3 августа 2020 на Wayback Machine), p. 103, Island Press, 1994, (ISBN 1559632356), accessed October 25, 2008.