no. 3
The p-adic gamma function and the congruences of Atkin and Swinnerton-Dyer
Groupe de travail d'analyse ultramétrique, Tome 9 (1981-1982) no. 3, Exposé no. J17, 6 p. 
@article{GAU_1981-1982__9_3_A18_0,
     author = {van Hamme, Lucien},
     title = {The $p$-adic gamma function and the congruences of Atkin and Swinnerton-Dyer},
     journal = {Groupe de travail d'analyse ultram\'etrique},
     note = {talk:J17},
     publisher = {Secr\'etariat math\'ematique},
     volume = {9},
     number = {3},
     year = {1981-1982},
     zbl = {0512.12014},
     language = {en},
     url = {www.numdam.org/item/GAU_1981-1982__9_3_A18_0/}
}
Van Hamme, Lucien. The $p$-adic gamma function and the congruences of Atkin and Swinnerton-Dyer. Groupe de travail d'analyse ultramétrique, Tome 9 (1981-1982) no. 3, Exposé no. J17, 6 p. http://www.numdam.org/item/GAU_1981-1982__9_3_A18_0/

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