On the non-measurability of a certain mapping
Compositio Mathematica, Volume 22 (1970) no. 1, p. 137-141 
@article{CM_1970__22_1_137_0,
     author = {Atalla, Robert E.},
     title = {On the non-measurability of a certain mapping},
     journal = {Compositio Mathematica},
     publisher = {Wolters-Noordhoff Publishing},
     volume = {22},
     number = {1},
     year = {1970},
     pages = {137-141},
     zbl = {0189.05802},
     mrnumber = {259058},
     language = {en},
     url = {http://www.numdam.org/item/CM_1970__22_1_137_0}
}

Atalla, Robert E. On the non-measurability of a certain mapping. Compositio Mathematica, Volume 22 (1970) no. 1, pp. 137-141. http://www.numdam.org/item/CM_1970__22_1_137_0/

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