no. 2
The frame of fibrewise closed nuclei
Cahiers de Topologie et Géométrie Différentielle Catégoriques, Tome 32 (1991) no. 2, pp. 99-112. 
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     author = {Jibladze, Mamumka and Johnstone, Peter T.},
     title = {The frame of fibrewise closed nuclei},
     journal = {Cahiers de Topologie et G\'eom\'etrie Diff\'erentielle Cat\'egoriques},
     pages = {99--112},
     publisher = {Dunod \'editeur, publi\'e avec le concours du CNRS},
     volume = {32},
     number = {2},
     year = {1991},
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     url = {http://www.numdam.org/item/CTGDC_1991__32_2_99_0/}
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Jibladze, M.; Johnstone, P. T. The frame of fibrewise closed nuclei. Cahiers de Topologie et Géométrie Différentielle Catégoriques, Tome 32 (1991) no. 2, pp. 99-112. http://www.numdam.org/item/CTGDC_1991__32_2_99_0/

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