@article{10_5427_jsing_2018_17q,
     author = {E.B. Batista and J.C.F. Costa, and I.S. Meza-Sarmiento},
     title = {Topological classification of circle-valued simple {Morse-Bott} functions},
     journal = {Journal of Singularities},
     pages = {388--402},
     publisher = {mathdoc},
     volume = {17},
     year = {2018},
     doi = {10.5427/jsing.2018.17q},
     url = {http://geodesic.mathdoc.fr/articles/10.5427/jsing.2018.17q/}
}