The gauge and conditional gauge theorem
Séminaire de probabilités de Strasbourg, Tome 19 (1985) , pp. 496-503. 
@article{SPS_1985__19__496_0,
     author = {Chung, Kai Lai},
     title = {The gauge and conditional gauge theorem},
     journal = {S\'eminaire de probabilit\'es de Strasbourg},
     pages = {496--503},
     publisher = {Springer - Lecture Notes in Mathematics},
     volume = {19},
     year = {1985},
     zbl = {0561.60084},
     mrnumber = {889497},
     language = {en},
     url = {http://archive.numdam.org/item/SPS_1985__19__496_0/}
}
Chung, Kai Lai. The gauge and conditional gauge theorem. Séminaire de probabilités de Strasbourg, Tome 19 (1985) , pp. 496-503. http://archive.numdam.org/item/SPS_1985__19__496_0/

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