data("essil")
# In 2011, code obtained like that
# require("its")
# deb = "2006-01-01"; fin = "2009-12-31"
# essil= priceIts(instrument="EI.PA",start=deb ,end=fin, quote="Close")
# colnames(essil) = "essilor"
# In 2016
# require("tseries")
# essil <- get.hist.quote(instrument = "EI.PA", start=deb ,end=fin, quote="Close")
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