@article{10_4064_sm_124_1_59_80,
     author = {D. E.  Edmunds and  },
     title = {Two-sided estimates of the approximation numbers of certain {Volterra} integral operators},
     journal = {Studia Mathematica},
     pages = {59--80},
     publisher = {mathdoc},
     volume = {124},
     number = {1},
     year = {1997},
     doi = {10.4064/sm-124-1-59-80},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-124-1-59-80/}
}