@ARTICLE{NS,
 author = {Apte, A. and Auroux, D. and Ramaswamy, M.},
 title = {Observers for compressible Navier-Stokes equation},
 journal = {SIAM J. Control Optim.},
 volume = {56},
 number = {2},
 pages = {1081--1104},
 year = {2018},
}