@article{oai:tsukuba.repo.nii.ac.jp:00018653,
 author = {田崎, 博之 and TASAKI, Hiroyuki},
 issue = {2},
 journal = {Journal of approximation theory},
 month = {Dec},
 pages = {477--490},
 title = {Convergence rates of approximate sums of Riemann integrals},
 volume = {161},
 year = {2009},
 yomi = {タサキ, ヒロユキ}
}