1. Dynamic Behavior and Design of Servomechanisms;Brown;The American Society of Mechanical Engineers paper no. 45-A-20,1945
2. Designing Hydraulic Servo Circuits;Grosser;Machine Design,1942
3. See also “Hydraulic Control Affords Design Flexibility,” “How to Select Hydraulic Power Equipment,” “Designing for Hydraulic Variable Speed,” “Designing for Hydraulic Torque Control,” and “Designing Controlled Power Hydraulic Circuits” published in Machine Design from December 1940 to January 1942 by the same author.
4. The Frequency Response of Automatic Control Systems;Harris;The American Institute of Electrical Engineers; Technical Paper 46–114,1946
5. Application of Circuit Theory to the Design of Servomechanisms;Hall;Journal of the Franklin Institute,1946