1. Uniform harmonic approximation on compact sets in Rk,k, k⩾3;Andrievskii;SIAM J. Math. Anal.,1993
2. T. Bagby, N. Levenberg, Bernstein theorems for harmonic functions, in: Selected Papers of International Seminars on “Methods of Approximation Theory in Complex Analysis and Mathematical Physics” held in Leningrad, Russia, May 13–26, 1991, Lecture Notes in Mathematics, vol. 1550, Springer, Berlin, 1993, pp. 7–18.
3. Bernstein theorems;Bagby;New Zealand J. Math.,1993
4. Bernstein theorems for elliptic equations;Bagby;J. Approx. Theory,1994
5. Collected Works, Part I: Constructive Theory of Functions (1905–1930);Bernstein,1952