Gärtner, J. (1977). "On large deviations from the invariant measure". Theory of Probability and Its Applications. 22: 24–39. doi:10.1137/1122003.
Gärtner, J. (1982). "Location of wave fronts for the multidimensional KPP equation and Brownian first exit densities". Math. Nachr. 105: 317–351. doi:10.1002/mana.19821050117.