@article{MS2_1978__42_166578,
     author = {Joel Anderson},
     title = {A maximal {Abelian} subalgebra of the {Calkin} algebra with the extension property.},
     journal = {Mathematica Scandinavica},
     pages = {101--110},
     publisher = {mathdoc},
     volume = {42},
     year = {1978},
     zbl = {0397.46052},
     url = {http://geodesic.mathdoc.fr/item/MS2_1978__42_166578/}
}