@article{10_1017_S2040618500034651,
     author = {Putnam, C. R.},
     title = {Positive matrices and eigenvectors{\textdagger}},
     journal = {Glasgow mathematical journal},
     pages = {27--30},
     year = {1963},
     volume = {6},
     number = {1},
     doi = {10.1017/S2040618500034651},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S2040618500034651/}
}