\Bibitem{AkhVai83} \by I.~Sh.~Akhatov, P.~B.~Vainshtein \paper Nonstationary combustion regimes in porous powders \jour Fizika Goreniya i Vzryva \yr 1983 \vol 19 \issue 3 \pages 53--62 \mathnet{http://mi.mathnet.ru/fgv4670} \transl \jour Combustion, Explosion and Shock Waves \yr 1983 \vol 19 \issue 3 \pages 297--304 \crossref{https://doi.org/10.1007/BF00782853}