Calvin Klein | Oskar Kokoschka | Yves Klein | Naomi Klein | Melanie Klein | Joe Klein | Ralph Klein | Oskar Schindler | Lee Oskar | Felix Klein | Calvin Klein (fashion designer) | Anne Klein | Allen Klein | Lawrence Klein | Joel Klein | Hans-Joachim Klein | Willem Klein | Warren Klein | Peter W. Klein | Paul Oskar Kristeller | Oskar Sima | Oskar Pfister Award | Oskar Luts | Oskar Linnros | Oskar Kohnstamm | Oskar Fischinger | Oskar Eustis | Harry Klein | Todd Klein | Stephanie Klein |
The Klein–Nishina formula was derived in 1928 by Oskar Klein and Yoshio Nishina, and was one of the first results obtained from the study of quantum electrodynamics.