@Book{OL17951397M,
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    author: {John C. Bogle},
    publisher: {John Wiley \& Sons},
    year: {2007},
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}

@Book{OL383989M,
    title: {The millionaire next door},
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@Book{OL24753520M,
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    year: {2000},
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@Work{OL273187W,
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}

@Work{OL2394154W,
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@Work{OL527463W,
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@Work{OL14910440W,
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@Work{OL15932488W,
    title: {The Warren Buffet way},
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@Author{OL327754A,
    name: {Robert G. Hagstrom},
    birth_date: {1956}
}