@article{article, title = {{Comparison of the He+ layer observed over Arecibo during solar maximum and solar minimum with CTIP model results}}, url = {{}}, year = {{2003}}, month = {{12}}, author = {{Wilford CR and Moffett RJ and Rees JM and Bailey GJ and Gonzalez SA}}, doi = {{10.1029/2003JA009940}}, volume = {{108}}, journal = {{J GEOPHYS RES-SPACE}}, issue = {{A12}}, note = {{Accessed on 2024/10/23}}}