Cem. Pearce et J. Pecaric, ON 2 LEMMAS OF BROWN AND SHEPP HAVING APPLICATION TO SUM SETS AND FRACTALS .2., Journal of the Australian Mathematical Society. Series B. Applied mathematics, 37, 1996, pp. 490-494
Simple proofs are given of improved results of Brown and Shepp which a
re useful in calculations with fractal sets. A new inequality for conv
ex functions is also obtained.