Key points are not available for this paper at this time.
Improved inequalities over the ones reported by J.M. Saniuk and I.B. Rhodes (1987) in the above mentioned paper (ibid., vol.32, p.739-40, 1987) are obtained following the reasoning developed thereby. Relations are presented that demonstrate the improvement asserted by the commenter.>
Tomoya Mori (1988) studied this question.