%0 Journal Article %T Intraday seasonalities and nonstationarity of trading volume in financial markets: Collective features %A Michelle B. Graczyk %A S¨ªlvio M. Duarte Queir¨®s %J Archive of "PLoS ONE". %D 2017 %R 10.1371/journal.pone.0179198 %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5533438/