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@article{MAN_1963__149_161009, author = {J.J. Sch\"affer}, title = {Linear {Differential} {Equations} and {Functional} {Analysis.} {VII.} {Equations} on (? ..., + ...).}, journal = {Mathematische Annalen}, pages = {1--32}, publisher = {mathdoc}, volume = {149}, year = {1963}, zbl = {0106.29101}, url = {http://geodesic.mathdoc.fr/item/MAN_1963__149_161009/} }
J.J. Schäffer. Linear Differential Equations and Functional Analysis. VII. Equations on (? ..., + ...).. Mathematische Annalen, Tome 149 (1963), pp. 1-32. http://geodesic.mathdoc.fr/item/MAN_1963__149_161009/