@article{MSH_1978__64__71_0,
     author = {Poston, Tim},
     title = {On deducing the presence of catastrophes},
     journal = {Math\'ematiques et sciences humaines},
     pages = {71--99},
     year = {1978},
     publisher = {Ecole Pratique des hautes \'etudes, Centre de math\'ematique sociale et de statistique},
     volume = {64},
     mrnumber = {538884},
     zbl = {0411.00016},
     language = {en},
     url = {https://www.numdam.org/item/MSH_1978__64__71_0/}
}