@book{Hopf:1934:MPR,
author = {Hopf, E.},
title = {Mathematical Problems of Radiative Equilibrium},
series = {Cambridge Tracts in Mathematics and Mathematical Physics No. 31},
note = {Reprinted by Stechert-Hafner, Inc., New York, 1964},
publisher = {Cambridge University Press},
address = {Cambridge},
year = {1934},
pages = {v+104},
mrclass = {85.00},
mrnumber = {MR0183517 (32 \#997)},
zblno = {0009.33004}}