@phdthesis{oai:u-ryukyu.repo.nii.ac.jp:02019150, author = {ROY, JITENDRO NATH}, school = {琉球大学}, title = {A STUDY ON WIND TURBINE GENERATORS -Performance Improvements of VAWT with a Guide-Box Tunnel and HAWT with Thin Aerofoil Blades-} }