TY - BOOK AU - Popkova, Elena G. AU - Sergi, Bruno S. TI - Digital Economy: : complexity and variety vs. rationality SN - 9783030295851- ( v. 87 ) AV - HF5548.325 .D54 PY - 2020/// CY - Cham, Switzerland PB - Springer KW - Electronic commerce KW - Technological innovations KW - Economics N1 - Includes bibl. refs ER -