“Transition of Crude Oil Price (WTI),” Accessed 11 June 2012. http://ecodb.net/pcp/imf_usd_poiluti.html#index02

has been cited by the following article:

• TITLE: The Validity of the Reduction of Disposable Plastic Checkout Bags in Japan

  AUTHORS: Masakazu Yamashita, Daichi Toyofuku

  KEYWORDS: Disposable; Plastic Bag; Reduction; Oil-Saving

  JOURNAL NAME: Journal of Environmental Protection, Vol.3 No.9, September 24, 2012

  ABSTRACT: This study examined the effect of reducing disposable plastic checkout bags used in supermarkets, convenience stores, and so on in Japan. Considering that even when these checkout bags are abolished, alternative waste bags should be newly produced, because these checkout bags have been reused as household waste bags so far, and the corresponding amount of oil is still necessary to produce them, the amount of oil saved by this bag reduction was found to be 0.2 L/person/year at most. Further, it was demonstrated that the necessity to purchase substitute bags may increase the household and financial burden on consumers.