@article{CG_1991___12_13_0,
     author = {Spivak, Michael},
     title = {LAMS-TeX : {A} public domain document preparation system extended {AMS-TeX}},
     journal = {Cahiers GUTenberg},
     pages = {13--20},
     publisher = {Association GUTenberg},
     number = {12},
     year = {1991},
     language = {en},
     url = {http://www.numdam.org/item/CG_1991___12_13_0/}
}