@article{etna_vol51_pp99-117, author = {Christopher Hofmann and Bernd Hofmann and Alois Pichler}, title = {Simultaneous identification of volatility and interest rate functions-a two-parameter regularization approach}, journal = {Electron. Trans. Numer. Anal.}, volume = {51}, year = {2019}, pages = {99--117}, doi = {10.1553/etna_vol51s99}, }