@article{article3d406594,
title   = {Integral operators on the sphere generated by positive definite smooth kernels},
author = {Ferreira, J. C. and Menegatto, Valdir Antonio and Peron, Ana Paula},
year = {2008},
doi = {10.1016/j.jco.2008.04.001},
journal   = {Journal of Complexity}
}