@article{CG_1991___10-11_15_0,
     author = {Knappen, J\"org},
     title = {TeX in {Africa}},
     journal = {Cahiers GUTenberg},
     pages = {15--24},
     publisher = {Association GUTenberg},
     number = {10-11},
     year = {1991},
     language = {en},
     url = {http://archive.numdam.org/item/CG_1991___10-11_15_0/}
}