Aa. Danielyan et La. Rubel, UNIFORM APPROXIMATION BY ENTIRE-FUNCTIONS THAT ARE ALL BOUNDED ON A GIVEN SET, Constructive approximation, 14(4), 1998, pp. 469-473
For two closed sets F and G in the complex plane C, G not equal C, we
solve the following problem Under what conditions on F and G can every
function f, continuous on F and analytic in its interior, be uniforml
y approximated by entire functions, each of which is bounded on G?