American Institute of Electrical Engineers, Transactions of the
Transactions of the American Institute of Electrical Engineers > 1950 > 69 > 2 > 686 - 691
Transactions of the American Institute of Electrical Engineers > 1950 > 69 > 2 > 671 - 679
Transactions of the American Institute of Electrical Engineers > 1950 > 69 > 2 > 692 - 698