@article{TUW-166973, author = {Hobiger, Thomas and Kondo, Tetsuro and Koyama, Yasuhiro}, title = {Constrained simultaneous algebraic reconstruction technique (C-SART)- a new and simple algorithm applied to ionospheric tomography}, journal = {Earth Planets and Space}, year = {2008}, volume = {Vol. 60}, number = {No. 7}, pages = {727--735} }