[241] On a problem in simultaneous diophantine approximation: Littlewood's conjecture

[242] On the theory of potentials in locally compact spaces

[243] The calculation of the ergodic projection for Markov chains and processes with a countable infinity of states

[244] Pointwise limits for sequences of convolution operators

[245] Entropy, Hausdorff measures old and new, and limit sets of geometrically finite Kleinian groups