@article{MM2_1973__9_154170,
     author = {Manfred Kracht and Gunnar Schr\"oder},
     title = {Bergmannsche {Polynom-Erzeugende} erster {Art.}},
     journal = {Manuscripta mathematica},
     pages = {333--356},
     publisher = {mathdoc},
     volume = {9},
     year = {1973},
     zbl = {0256.35005},
     url = {http://geodesic.mathdoc.fr/item/MM2_1973__9_154170/}
}