“Hard X-rays in Descent,” by Aidan O’Flannagain and John Brown: a novel test of the cold thick-target model for flare hard X-ray production. See
http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Hard_X-rays_in_Descent
http://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Hard_X-rays_in_Descent