1. Windenergie und ihre ausnutzung durch windmuhlen;Betz,1926
2. Applied aerodynamics of wind power machines;Wilson,1974
3. Windpower: A handbook of wind energy conversion systems;Hunt,1981
4. Teoiric úr don teascghníomhróir agus don mhuileann gaoithe. (A new theory for the actuator disc and the windmill). (In Irish.);de Paor,1980
5. Inversion of a new equation for the optimum actuator disc in windmill theory;de Paor;Appl. Math. Modelling,1980