This paper contains the following errors. 1. "$I_{{x>D}}{lambda}dt_{p0}(t)s(x)$" should be added to the right hand side of (2.3). 2. "$I_{{x>D}}{lambda}_{p0}(t)s(x)$" should be added to the right hand side of (2.6). 3. "$I_{{x>D}}{lambda}_{p0}s(x)$" should be added to the right hand side of (2.9). 4. In Theorem 2.3 and its proof, "${lambda}{int}_{0}^{D}f(y)s(x-y)dy$" appears three times (including one in (2.20)). To each of these, "${lambda}_{po}s(x)$" should be added. 5. In Remark 2.5, "${lambda}dt_{p0}/s(x)dx" should be added to "${int}_{0}^{D}{lambda}dt;s(x-y)dxf(y)dy$". As a result of these corrections, a simpler proof of Theorem 2.3 becomes available. Substituting (2.18), (2.21), (2.22) into the left hand side of (2.20) and comparing the result with (2.10), we have the right hand side of (2.20).