Chinese Journal of Polar Research
FROM MANDATORY ICEBREAKER GUIDING TO A PERMIT REGIME: CHANGES TO THE NORTHERN SEA ROUTE  IN NEW RUSSIAN LAW
Zhang Xia，Tu Jingfang，Qian Zongqi，Wang Zelin，Yang Huigen
ADVANCES IN POLAR SCIENCE . 2014, (2): 268 -275 .  DOI: 10.13679/j.jdyj.2014.2.268