7Bragg J R, Prince R C, Hamer [J, et al. Effectiveness of bioremediation for the Exxon Valdez oil spill[J]. Nature, 1994, 368(6470) : 413- 418.
8Transport Canada. Arctic ice regime shipping system (AIRSS) : user assistance package for the implementation of Canada' s Arctic ice regime ship- ping system (AIRSS) [Z]. TP12819E. 1998.
9McCallum J. Safe speed in ice: an analysis of transit speed and ice decision numerals[ R]. Ship Safety Northern (AMNS). Ottawa: Transport Can- ada, 1996.
10Parsons J, Dinwoodie J, Roe M. Northern opportunities: a strategic review of Canada g Arctic icebreaking services[ J ]. Marine Policy, 2011, 35 (4) : 549-556.
