@article{AFM_1964_336-344_a15,
     author = {C. L. Dolph},
     title = {Positive real resolvents and linear passive {Hilbert} systems},
     journal = {Annales Fennici Mathematici},
     publisher = {mathdoc},
     volume = {336-344},
     year = {1964},
     doi = {10.5186/aasfm.1964.336-09},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1964.336-09/}
}