@article{MM2_1984__47_155011,
     author = {Heinz Spindler and Christian Okonek},
     title = {Das {Spektrum} torsionsfreier {Garben} {I.}},
     journal = {Manuscripta mathematica},
     pages = {187--228},
     publisher = {mathdoc},
     volume = {47},
     year = {1984},
     zbl = {0558.14012},
     url = {http://geodesic.mathdoc.fr/item/MM2_1984__47_155011/}
}