@article{article25e90ae1,
title   = {Boundary and internal conditions for adjoint fluid-flow problems: application to the quasi-1D Euler equations},
author = {Volpe, Ernani Vitillo and Santos, Luis Carlos de Castro},
year = {2009},
doi = {10.1007/s10665-008-9258-7},
journal   = {Journal of Engineering Mathematics}
}