Updates are available Correction dated 2015-10-23

Click to view Correction: https://doi.org/10.1134/s0015462815050142

A variational principle for problems of steady-state ground water flow with a free surface

Crossref DOI link: https://doi.org/10.1134/S0015462815040092

Published Online: 2015-08-21

Published Print: 2015-07

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