1. The Mathematics of Radiative Transfer;Busbridge,1960
2. Radiative Transfer;Chandrasekhar,1960
3. Neutron Transport Theory;Davison,1958
4. Nonthermal Impurity Radiation from a Spherical Plasma
5. M. Feix, Unpublished Thesis, Faculté des Sciences de l'Université de Paris, (1958).