@article{10_4064_sm_116_3_283_294,
     author = {Robin Harte and  },
     title = {An index formula for chains},
     journal = {Studia Mathematica},
     pages = {283--294},
     publisher = {mathdoc},
     volume = {116},
     number = {3},
     year = {1995},
     doi = {10.4064/sm-116-3-283-294},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-116-3-283-294/}
}