@article{10_1023_A_1023012328209,
     author = {K\"arkk\"ainen, Tommi},
     title = {Error estimates for distributed parameter identification in parabolic problems with output least squares and {Crank-Nicolson} method},
     journal = {Applications of Mathematics},
     pages = {259--277},
     publisher = {mathdoc},
     volume = {42},
     number = {4},
     year = {1997},
     doi = {10.1023/A:1023012328209},
     mrnumber = {1453932},
     zbl = {0902.65036},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1023/A:1023012328209/}
}