TY - Computer Engineering and Applications A1 - LI Songzhao, LI Wenjing, LU Jianbo T1 - Research on Logistics Service Transaction Blockchain and Ant Colony Smart Contract Algorithm Y1 - 2019-09-01 JF - Computer Engineering and Applications JO - Computer Engineering and Applications SP - 28 EP - 34 VL - 55 IS - 17 UR - http://cea.ceaj.org N1 - 10.3778/j.issn.1002-8331.1811-0398 ER -