Text ( visual ) : unmediated The challenge of the digital economy : markets, taxation and appropriate economic models / Francesco Boccia, Robert Leonardi editors. -- : hbk. -- Cham : Palgrave Macmillan , c2016. -- xvii, 148 p. : ill. (some col.) ; 22 cm. -- Bibliography: p. 137-139 ; Includes index. -- ISBN 9783319436890 ; (BB2333544X) ; https://ci.nii.ac.jp/ncid/BB2333544X Author Heading(s): Boccia, Francesco ; Leonardi, Robert. -- Classification(s): DC23 : 381.142. -- Subject Heading(s): LCSH : Electronic commerce -- Taxation