1. Group analysis of differential equations;Ovsyannikov,1978
2. Heat structures and the fundamental length in a medium with non-linear heat conduction and three-dimensional heat sources;Samarskii;Dokl. Akad. Nauk SSSR,1976
3. Burning of a non-linear medium in the form of composite structures;Samarskii;Dokl. Akad. Nauk SSSR,1977
4. Localization of thermonuclear combustion in plasma with electronic heat conduction;Zmitrenko;Letter to ZhETF,1977
5. Über die Integration durch bestimmte Integrale von einer Klasser linearer partiellen Differentialglei chungen;Lie;Arch. Math.,1881