@article {28467,
	title = {Robust Preconditioning and Error Estimates for Optimal Control of the Convection--Diffusion--Reaction Equation with Limited Observation in Isogeometric Analysis},
	journal = {SIAM Journal on Numerical Analysis},
	volume = {60},
	year = {2022},
	month = {Jan-02-2022},
	pages = {195 - 221},
	publisher = {SIAM },
	issn = {0036-1429},
	doi = {10.1137/21M139147X},
	url = {https://epubs.siam.org/doi/10.1137/21M139147Xhttps://epubs.siam.org/doi/pdf/10.1137/21M139147X},
	author = {Mardal, Kent-Andre and Sogn, Jarle and Takacs, Stefan}
}
