@inproceedings{gerd1991a,
title={A global calculus of parameter-dependent pseudodifferential boundary problems in$L$_{p}Sobolev spaces},
author={Gerd Grubb, and Niels Jørgen Kokholm},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203320762802489},
booktitle={Acta Mathematica},
volume={171},
number={2},
pages={165-229},
year={1991},
}
Gerd Grubb, and Niels Jørgen Kokholm. A global calculus of parameter-dependent pseudodifferential boundary problems in$L$_{p}Sobolev spaces. 1991. Vol. 171. In Acta Mathematica. pp.165-229. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203320762802489.