@article{10_37236_5871,
     author = {David E Speyer},
     title = {Variations on a theme of {Kasteleyn,} with application to the totally nonnegative {Grassmannian}},
     journal = {The electronic journal of combinatorics},
     year = {2016},
     volume = {23},
     number = {2},
     doi = {10.37236/5871},
     zbl = {1335.05088},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/5871/}
}