no. 1

On absolutely extremal points
Compositio Mathematica, Tome 59 (1986) no. 1, pp. 51-56. 
@article{CM_1986__59_1_51_0,
     author = {Glasner, Shmuel and Maon, D.},
     title = {On absolutely extremal points},
     journal = {Compositio Mathematica},
     pages = {51--56},
     publisher = {Martinus Nijhoff Publishers},
     volume = {59},
     number = {1},
     year = {1986},
     zbl = {0596.54036},
     mrnumber = {850120},
     language = {en},
     url = {http://www.numdam.org/item/CM_1986__59_1_51_0/}
}
Glasner, S.; Maon, D. On absolutely extremal points. Compositio Mathematica, Tome 59 (1986) no. 1, pp. 51-56. http://www.numdam.org/item/CM_1986__59_1_51_0/

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[2] S. Glasner and D. Maon: An inverted tower of almost 1-1 extensions. Journal d'Analyse Math. Vol 44 (1984/85) 67-75. | MR 801287 | Zbl 0567.54026

[3] D. Maon: On the relation N, the obstruction to uniform rigidity. Tel Aviv University.

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