American Institute of Electrical Engineers, Transactions of the
Transactions of the American Institute of Electrical Engineers > 1950 > 69 > 2 > 703 - 710
Transactions of the American Institute of Electrical Engineers > 1950 > 69 > 2 > 781 - 785
Transactions of the American Institute of Electrical Engineers > 1950 > 69 > 2 > 1658 - 1661
Transactions of the American Institute of Electrical Engineers > 1950 > 69 > 2 > 1142 - 1147