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  year   = {2005},
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  url    = {http://www.sciencedirect.com/science/article/B6V1G-4FD0HTT-3/2/7efa1ee4d7b4823c7315a58b94f2f280},
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  const  = {\ text}
}
@Article{219403,
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  const  = {\ text}
}