DIRECT CURRENT MACHINES SECOND EDITION
M G SAY AND E OPENSHAW TAYLOR1980 年出版0 页ISBN：
High voltage direct current transmission converters
systems and DC grids2015 年出版422 页ISBN：1118846664
Direct and Alternating Current Machinery 2nd Edition
Jack Rosenblatt1984 年出版553 页ISBN：
The elementary theory of direct current dynamo electric machinery
Cyril Ernest Ashford ; Eric W. E. Kempson2015 年出版122 页ISBN：1107494930
COMMUNITY PROJECTS AS SOCIAL ACTIVISM FROM DIRECT ACTION TO DIRECT SERVICES
BENJAMIN SHEPARD2015 年出版234 页ISBN：9781412964265
