OGLE
1994 / [Search and Discovery] MACHO Searches Find Most Candidates in Unexpected Places / Bertram Schwarzschild / Physics Today 47 (1994) p. 17 [doi]
2006 / [Search and Discovery] Gravitational Microlensing Reveals the Lightest Exoplanet Yet Found / Bertram Schwarzschild / Physics Today 59 (2006) p. 22 [doi]