1. Abramowitz, M., Setgun, I.A. (eds.): Handbook of mathematical functions with formulas, graphs, and mathematical tables, 9th printing. Dover, New York (1972)
2. Addam, M.: Approximation du problème de diffusion en tomographie optique et problème inverse. Ph.D. thesis, LMPA, Université Lille-Nord de France (2010)
3. Addam, M., Bouhamidi, A., Jbilou, K.: Signal reconstruction for the diffusion transport equation using tensorial spline Galerkin approximation. Appl. Numer. Math. 62, 1089–1108 (2012)
4. Anile, A.M., Pennisi, S., Sammartino, M.A.: A thermodynamical approach to Eddington factors. J. Math. Phys. 32, 544–550 (1991)
5. Backofen, R., Bilz, T., Ribalta, A., Voigt, A.: $${SP}_{N}$$ S P N -approximations of internal radiation in crystal growth of optical materials. J. Cryst. Growth. 266, 264–270 (2004)