no. 3
The intersection of distinct Galois subrings is not necessarily Galois
Compositio Mathematica, Volume 40 (1980) no. 3, pp. 283-286 
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     author = {Al-Khamees, Yousif},
     title = {The intersection of distinct {Galois} subrings is not necessarily {Galois}},
     journal = {Compositio Mathematica},
     pages = {283--286},
     publisher = {Sijthoff et Noordhoff International Publishers},
     volume = {40},
     number = {3},
     year = {1980},
     mrnumber = {571050},
     zbl = {0406.16015},
     language = {en},
     url = {https://www.numdam.org/item/CM_1980__40_3_283_0/}
}
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Al-Khamees, Yousif. The intersection of distinct Galois subrings is not necessarily Galois. Compositio Mathematica, Volume 40 (1980) no. 3, pp. 283-286. https://www.numdam.org/item/CM_1980__40_3_283_0/

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