Multiple flare-angle horn feeds for sub-mm astronomy and cosmic microwave background experimentsJ. Leech, B. K. Tan, G. Yassin, P. Kittara, S. Wangsuya, J. Treuttel, M. Henry, M. L. Oldfield and P. G. HuggardA&A, 532 (2011) A61DOI: https://doi.org/10.1051/0004-6361/201117124
