@article{10_4064_fm_118_3_233_236,
     author = {Frank Harary and Egbert Harzheim},
     title = {The degree sets of connected infinite graphs},
     journal = {Fundamenta Mathematicae},
     pages = {233--236},
     publisher = {mathdoc},
     volume = {118},
     number = {3},
     year = {1983},
     doi = {10.4064/fm-118-3-233-236},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-118-3-233-236/}
}