Barker, Andrew T., and Drăgănescu, Andrei. Algebraic multigrid preconditioning of the Hessian in optimization constrained by a partial differential equation. Retrieved from https://par.nsf.gov/biblio/10294625. Numerical Linear Algebra with Applications 28.1 Web. doi:10.1002/nla.2333.

Barker, Andrew T., & Drăgănescu, Andrei. Algebraic multigrid preconditioning of the Hessian in optimization constrained by a partial differential equation. Numerical Linear Algebra with Applications, 28 (1). Retrieved from https://par.nsf.gov/biblio/10294625. https://doi.org/10.1002/nla.2333

Barker, Andrew T., and Drăgănescu, Andrei. "Algebraic multigrid preconditioning of the Hessian in optimization constrained by a partial differential equation". Numerical Linear Algebra with Applications 28 (1). Country unknown/Code not available. https://doi.org/10.1002/nla.2333. https://par.nsf.gov/biblio/10294625.

@article{osti_10294625,
place = {Country unknown/Code not available}, title = {Algebraic multigrid preconditioning of the Hessian in optimization constrained by a partial differential equation}, url = {https://par.nsf.gov/biblio/10294625}, DOI = {10.1002/nla.2333}, abstractNote = {}, journal = {Numerical Linear Algebra with Applications}, volume = {28}, number = {1}, author = {Barker, Andrew T. and Drăgănescu, Andrei}, editor = {null} }