References
- A. D. Aleksandrov, Uniqueness conditions and estimates for the solution of the Dirichlet problem, Vestnik Leningrad Univ. 18 (1963), no. 3, 5-29 (in Russian); English transl.: Amer. Math. Soc. Transl. (2) 68 (1968), 89-119.
- R. F. Bass and K. Burdzy, The boundary Harnack principle for non-divergence form elliptic operators, J. London Math. Soc. 50 (1994), 157-169. https://doi.org/10.1112/jlms/50.1.157
- H. Kim and M. Safonov, Carleson type estimates for second order elliptic equations with unbounded drift, J. Math. Sci. 176 (2011), no. 6, 928-944. https://doi.org/10.1007/s10958-011-0444-1
- H. Kim and M. Safonov, Boundary Harnack principle for second order elliptic equations with unbounded drift, J. Math. Sci. 179 (2011), no. 1, 127-143. https://doi.org/10.1007/s10958-011-0585-2
- H. Kim and M. Safonov, The boundary Harnack principle for second order elliptic equations in John and Uniform domains, Proceedings of the St. Petersburg Mathematical Society, Volume XV, pp. 153-176, Advances in Mathematical Analysis of Partial Differential Equations, 2014.
- E. M. Landis, Second Order Equations of Elliptic and Parabolic Type, "Nauka", Moscow, 1997 (in Russian); English transl.: Amer. Math. Soc. Transl., Providence, RI, 1997.
- M. Safonov, Non-divergence elliptic equations of second order with unbounded drift, differential equations and related topics, 211-232, Amer. Math. Soc. Transl. Ser. 2, 229, Amer. Math. Soc., Providence, RI, 2010.