@article{10_21136_AM_1977_103674,
     author = {Kyncl, Jan and Marek, Ivo},
     title = {Relaxation lengths and non-negative solutions in neutron transport},
     journal = {Applications of Mathematics},
     pages = {1--13},
     year = {1977},
     volume = {22},
     number = {1},
     doi = {10.21136/AM.1977.103674},
     mrnumber = {0426731},
     zbl = {0399.45016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/AM.1977.103674/}
}