@article{KYB_2010__46_6_a10,
     author = {Hudson, Robin L.},
     title = {Quantum {Bochner} theorems and incompatible observables},
     journal = {Kybernetika},
     pages = {1061--1068},
     publisher = {mathdoc},
     volume = {46},
     number = {6},
     year = {2010},
     mrnumber = {2797427},
     zbl = {1219.81175},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_2010__46_6_a10/}
}