@article{GT_2016_20_6_a4,
     author = {Usher, Michael and Zhang, Jun},
     title = {Persistent homology and {Floer{\textendash}Novikov} theory},
     journal = {Geometry & topology},
     pages = {3333--3430},
     publisher = {mathdoc},
     volume = {20},
     number = {6},
     year = {2016},
     doi = {10.2140/gt.2016.20.3333},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/gt.2016.20.3333/}
}