@article{CRMATH_2011__349_15-16_873_0,
     author = {Martin A. Grepl and Mark K\"archer},
     title = {Reduced basis a posteriori error bounds for parametrized linear-quadratic elliptic optimal control problems},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {873--877},
     publisher = {Elsevier},
     volume = {349},
     number = {15-16},
     year = {2011},
     doi = {10.1016/j.crma.2011.07.010},
     language = {en},
}