@article{10_2140_agt_2013_13_237,
     author = {Banyaga, Augustin and Hurtubise, David E},
     title = {Cascades and perturbed {Morse{\textendash}Bott} functions},
     journal = {Algebraic and Geometric Topology},
     pages = {237--275},
     year = {2013},
     volume = {13},
     number = {1},
     doi = {10.2140/agt.2013.13.237},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/agt.2013.13.237/}
}