American Institute of Electrical Engineers, Transactions of the
Transactions of the American Institute of Electrical Engineers > 1930 > 49 > 2 > 798 - 805
Transactions of the American Institute of Electrical Engineers > 1930 > 49 > 3 > 872 - 876
Transactions of the American Institute of Electrical Engineers > 1930 > 49 > 3 > 885 - 894
Transactions of the American Institute of Electrical Engineers > 1930 > 49 > 4 > 1232 - 1239
Transactions of the American Institute of Electrical Engineers > 1930 > 49 > 4 > 1536 - 1548