@article{articledfb9bd9a,
title   = {Boutet de Monvel’s calculus and groupoids I},
author = {Aastrup, Johannes and Melo, Severino Toscano do Rego and Monthubert, Bertrand and Schrohe, Elmar},
year = {2010},
doi = {10.4171/jncg/57},
journal   = {Journal of Noncommutative Geometry}
}