@article{10_4171_ifb_463,
     author = {Patrik Knopf and Chun Liu},
     title = {On second-order and fourth-order elliptic systems consisting of bulk and surface {PDEs:} {Well-posedness,} regularity theory and eigenvalue problems},
     journal = {Interfaces and free boundaries},
     pages = {507--533},
     year = {2021},
     volume = {23},
     number = {4},
     doi = {10.4171/ifb/463},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ifb/463/}
}