@article{HHA_2016_18_2_a5,
     author = {Katsuhiko Kuribayashi},
     title = {The ghost length and duality on the chain and cochain type levels},
     journal = {Homology, homotopy, and applications},
     pages = {107--132},
     publisher = {mathdoc},
     volume = {18},
     number = {2},
     year = {2016},
     doi = {10.4310/HHA.2016.v18.n2.a6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4310/HHA.2016.v18.n2.a6/}
}