@article{PORMA_1983__42_1_115523,
     author = {Diaz, J.B. and Ram, R.B. and Verma, G.R.},
     title = {Reflection principles for {Laplace's} equation when the boundary data involves derivatives of higher order},
     journal = {Portugaliae mathematica},
     pages = {23--40},
     publisher = {mathdoc},
     volume = {42},
     number = {1},
     year = {1983},
     mrnumber = {0796279},
     zbl = {0575.35013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1983__42_1_115523/}
}