@article {138, title = {Parametrization of the angular correlation and degree of linear polarization in two-photon decays of hydrogenlike ions}, volume = {86}, number = {4}, year = {2012}, month = {Oct}, url = {http://link.aps.org/doi/10.1103/PhysRevA.86.042509}, author = {Amaro, P and Fratini, F. and Fritzsche, S. and Indelicato, P. and Santos, J. and Surzhykov, A.} }