@article{CM_1968__20__222_0,
     author = {Kreisel, G.},
     title = {Lawless sequences of natural numbers},
     journal = {Compositio Mathematica},
     pages = {222--248},
     publisher = {Wolters-Noordhoff Publishing},
     volume = {20},
     year = {1968},
     mrnumber = {226992},
     zbl = {0157.33401},
     language = {en},
     url = {http://archive.numdam.org/item/CM_1968__20__222_0/}
}