References
- Minor Metal Trade Association 2012, http://www.mmta.co.uk/tungsten-market-overview.
- U.S. Geological Survey, Mineral Commodity Summaries, January 2015, http://minerals.usgs.gov/minerals/pubs/commodity/tungsten/mcs-2015-tungs.pdf.
- USGS, mineral Commodity summaries, tungsten, 2013
- USGS, mineral Commodity summaries, tungsten, 2011
- USGS, mineral Commodity summaries, tungsten, 2009
- USGS, mineral Commodity summaries, tungsten, 2007
- World Tungsten Report, November 2013, metal-pages report, Mark Seddon.
- EDISON, Tungdten, sector report, December 2014, Edison Investment Rerearch.
- 관세청, 수출입무역통계, http://www.customs.go.kr/kcsweb/user.tdf?a=user.newTradestatistics.NewTrad estatisticsApp&c=1003&mc=STATS_INQU_TRADE_020
- 산업통상자원부/한국광물자원공사, 광물자원 매장량 현황, 2013.
- 한국지질자원연구원, 광업광산물 통계연보 2014.