@article{Sela_2006,
    doi = {10.1007/s00039-006-0565-8},
    url = {https://doi.org/10.1007%2Fs00039-006-0565-8},
    year = {2006},
    month = {jun},
    publisher = {Springer Science and Business Media {LLC}},
    author = {Z. Sela},
    title = {{DIOPHANTINE} {GEOMETRY} {OVER} {GROUPS} {VI}: {THE} {ELEMENTARY} {THEORY} {OF} A {FREE} {GROUP}},
    journal = {{GAFA} Geometric And Functional Analysis}
}

@article{Sela_2006, doi = {10.1007/s00039-006-0565-8}, url = {https://doi.org/10.1007%2Fs00039-006-0565-8}, year = {2006}, month = {jun}, publisher = {Springer Science and Business Media {LLC}}, author = {Z. Sela}, title = {{DIOPHANTINE} {GEOMETRY} {OVER} {GROUPS} {VI}: {THE} {ELEMENTARY} {THEORY} {OF} A {FREE} {GROUP}}, journal = {{GAFA} Geometric And Functional Analysis} }