@article {2011ApJ...738...87S,
	title = {Binary Microlensing Event OGLE-2009-BLG-020 Gives Verifiable Mass, Distance, and Orbit Predictions},
	journal = {\apj},
	volume = {738},
	number = {1},
	year = {2011},
	month = {sep},
	pages = {87},
	keywords = {Astrophysics - Solar and Stellar Astrophysics, Binaries: general, Galaxy: bulge, gravitational lensing: micro},
	doi = {10.1088/0004-637X/738/1/87},
	author = {Skowron, J. and Udalski, A. and Gould, A. and Dong, Subo and Monard, L.~A.~G. and C. Han and Nelson, C.~R. and McCormick, J. and Moorhouse, D. and Thornley, G. and Maury, A. and Bramich, D.~M. and Greenhill, J. and Koz{\l}owski, S. and Bond, I. and Poleski, R. and Wyrzykowski, {\L}. and Ulaczyk, K. and Kubiak, M. and Szyma{\'n}ski, M.~K. and Pietrzy{\'n}ski, G. and Soszy{\'n}ski, I. and OGLE Collaboration and Gaudi, B.~S. and Yee, J.~C. and Hung, L. -W. and Pogge, R.~W. and DePoy, D.~L. and Lee, C. -U. and Park, B. -G. and Allen, W. and Mallia, F. and Drummond, J. and Bolt, G. and \ensuremathμFUN Collaboration and Allan, A. and Browne, P. and Clay, N. and Dominik, M. and Fraser, S. and Horne, K. and Kains, N. and Mottram, C. and Snodgrass, C. and Steele, I. and Street, R.~A. and Tsapras, Y. and Robonet Collaboration and Abe, F. and Bennett, D.~P. and Botzler, C.~S. and Douchin, D. and Freeman, M. and Fukui, A. and Furusawa, K. and Hayashi, F. and Hearnshaw, J.~B. and Hosaka, S. and Itow, Y. and Kamiya, K. and Kilmartin, P.~M. and Korpela, A. and Lin, W. and Ling, C.~H. and Makita, S. and Masuda, K. and Matsubara, Y. and Muraki, Y. and Nagayama, T. and Miyake, N. and Nishimoto, K. and Ohnishi, K. and Perrott, Y.~C. and Rattenbury, N. and Saito, To. and Skuljan, L. and Sullivan, D.~J. and Sumi, T. and Suzuki, D. and Sweatman, W.~L. and Tristram, P.~J. and Wada, K. and Yock, P.~C.~M. and MOA Collaboration and Beaulieu, J. -P. and ouqu{\'e}, P. and Albrow, M.~D. and Batista, V. and Brillant, S. and Caldwell, J.~A.~R. and Cassan, A. and Cole, A. and Cook, K.~H. and Coutures, Ch. and Dieters, S. and Dominis Prester, D. and Donatowicz, J. and Kane, S.~R. and Kubas, D. and Marquette, J. -B. and Martin, R. and Menzies, J. and Sahu, K.~C. and Wambsganss, J. and Williams, A. and Zub, M. and PLANET Collaboration}
}
