TY - JOUR T1 - On a Physical Theory of Stellar Spectra JF - Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character (1905-1934) VL - 99 IS - 697 SP - 135 EP - 153 PY - 1921/05/02/ UR - http://dx.doi.org/10.1098/rspa.1921.0029 M3 - doi:10.1098/rspa.1921.0029 AU - Saha, M. ER -