@article{10_21136_CMJ_1971_101014,
     author = {Bergman, John G.},
     title = {A duality theorem for standard threads},
     journal = {Czechoslovak Mathematical Journal},
     pages = {167--171},
     publisher = {mathdoc},
     volume = {21},
     number = {2},
     year = {1971},
     doi = {10.21136/CMJ.1971.101014},
     mrnumber = {0285656},
     zbl = {0228.22007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1971.101014/}
}