The invariant imbedding equation for the dissipation function of a homogeneous finite slab

R. E. Bellman, H. H. Kagiwada, R. E. Kalaba, S. Ueno
1967 Quarterly of Applied Mathematics  
doi:10.1090/qam/99892 fatcat:e4idpzxzpngthnsxpi2kvnfnx4