?url_ver=Z39.88-2004&rft_id=10.1063%2F1.4829434&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Aja&rft.aufirst=O.C.&rft.au=Aja%2C+O.C.&rft.date=2013&rft.issn=19417012&rft.atitle=Analytical+investigation+of+collector+optimum+tilt+angle+at+low+latitude&rft.issue=6&rft.title=Journal+of+Renewable+and+Sustainable+Energy&rft.volume=5&rft.genre=article