@article{Christopher_2007,
    title = {Inverse problems for multiple invariant curves},
    volume = {137},
    issn = {1473-7124},
    url = {http://dx.doi.org/10.1017/S0308210506000400},
    doi = {10.1017/s0308210506000400},
    number = {06},
    journal = {Proceedings of the Royal Society of Edinburgh: Section A Mathematics},
    publisher = {Cambridge University Press (CUP)},
    author = {Christopher, Colin and Llibre, Jaume and Pantazi, Chara and Walcher, Sebastian},
    year = {2007},
    month = {dec},
    pages = {1197–1226},
    date-added = {2023-11-25 10:38:5 +0100}
}

@article{Christopher_2007, title = {Inverse problems for multiple invariant curves}, volume = {137}, issn = {1473-7124}, url = {http://dx.doi.org/10.1017/S0308210506000400}, doi = {10.1017/s0308210506000400}, number = {06}, journal = {Proceedings of the Royal Society of Edinburgh: Section A Mathematics}, publisher = {Cambridge University Press (CUP)}, author = {Christopher, Colin and Llibre, Jaume and Pantazi, Chara and Walcher, Sebastian}, year = {2007}, month = {dec}, pages = {1197–1226}, date-added = {2023-11-25 10:38:5 +0100} }