Media type: E-Article Title: Energy corrections and persistent perturbation effects in continuous spectra Contributor: Van Hove, Léon imprint: Elsevier BV, 1955 Published in: Physica, 21 (1955) 6-10, Seite 901-923 Language: English DOI: 10.1016/s0031-8914(55)92832-9 ISSN: 0031-8914 Origination: Footnote: