@article{M2AN_2021__55_3_1239_0,
     author = {Keil, Tim and Mechelli, Luca and Ohlberger, Mario and Schindler, Felix and Volkwein, Stefan},
     title = {A non-conforming dual approach for adaptive {Trust-Region} reduced basis approximation of {PDE-constrained} parameter optimization},
     journal = {ESAIM: Mathematical Modelling and Numerical Analysis },
     pages = {1239--1269},
     year = {2021},
     publisher = {EDP-Sciences},
     volume = {55},
     number = {3},
     doi = {10.1051/m2an/2021019},
     mrnumber = {4269464},
     language = {en},
     url = {https://www.numdam.org/articles/10.1051/m2an/2021019/}
}