no. 2
On the greatest prime divisor of quadratic sequences
Séminaire de théorie des nombres de Bordeaux, Série 2, Tome 3 (1991) no. 2, pp. 361-375. 
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     author = {Pomyka{\l}a, J.},
     title = {On the greatest prime divisor of quadratic sequences},
     journal = {S\'eminaire de th\'eorie des nombres de Bordeaux},
     pages = {361--375},
     publisher = {Universit\'e Bordeaux I},
     volume = {Ser. 2, 3},
     number = {2},
     year = {1991},
     zbl = {0762.11030},
     language = {en},
     url = {http://archive.numdam.org/item/JTNB_1991__3_2_361_0/}
}
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Pomykała, J. On the greatest prime divisor of quadratic sequences. Séminaire de théorie des nombres de Bordeaux, Série 2, Tome 3 (1991) no. 2, pp. 361-375. http://archive.numdam.org/item/JTNB_1991__3_2_361_0/

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