@article{10_4153_S0008414X20000164,
     author = {Kuwert, Ernst and Lamm, Tobias},
     title = {Reflection of {Willmore} {Surfaces} with {Free} {Boundaries}},
     journal = {Canadian journal of mathematics},
     pages = {787--804},
     year = {2021},
     volume = {73},
     number = {3},
     doi = {10.4153/S0008414X20000164},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/S0008414X20000164/}
}