@article{PHSC_1998-1999__3_2_43_0,
     author = {Heinzmann, Gerhard},
     title = {Poincar\'e on understanding mathematics},
     journal = {Philosophia Scientiae},
     pages = {43--60},
     publisher = {\'Editions Kim\'e},
     volume = {3},
     number = {2},
     year = {1998-1999},
     language = {en},
     url = {http://archive.numdam.org/item/PHSC_1998-1999__3_2_43_0/}
}