@article{CM_1968__20__125_0,
     author = {J\'onsson, Bj\`arni and Olin, Philip},
     title = {Almost direct products and saturation},
     journal = {Compositio Mathematica},
     pages = {125--132},
     publisher = {Wolters-Noordhoff Publishing},
     volume = {20},
     year = {1968},
     mrnumber = {227004},
     zbl = {0155.03501},
     language = {en},
     url = {http://www.numdam.org/item/CM_1968__20__125_0/}
}