no. 1
On torsion in the slope spectral sequence
Compositio Mathematica, Tome 56 (1985) no. 1, pp. 79-86. 
@article{CM_1985__56_1_79_0,
     author = {Crew, Richard},
     title = {On torsion in the slope spectral sequence},
     journal = {Compositio Mathematica},
     pages = {79--86},
     publisher = {Martinus Nijhoff Publishers},
     volume = {56},
     number = {1},
     year = {1985},
     zbl = {0618.14007},
     mrnumber = {806843},
     language = {en},
     url = {www.numdam.org/item/CM_1985__56_1_79_0/}
}
Crew, Richard. On torsion in the slope spectral sequence. Compositio Mathematica, Tome 56 (1985) no. 1, pp. 79-86. http://www.numdam.org/item/CM_1985__56_1_79_0/

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