no. 3
Approximation and regularization of arbitrary functions in Hilbert spaces by the Lasry-Lions method
Annales de l'I.H.P. Analyse non linéaire, Tome 10 (1993) no. 3, pp. 289-312 
@article{AIHPC_1993__10_3_289_0,
     author = {Attouch, H. and Aze, D.},
     title = {Approximation and regularization of arbitrary functions in {Hilbert} spaces by the {Lasry-Lions} method},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {289--312},
     year = {1993},
     publisher = {Gauthier-Villars},
     volume = {10},
     number = {3},
     mrnumber = {1230710},
     zbl = {0780.41021},
     language = {en},
     url = {https://www.numdam.org/item/AIHPC_1993__10_3_289_0/}
}
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Attouch, H.; Aze, D. Approximation and regularization of arbitrary functions in Hilbert spaces by the Lasry-Lions method. Annales de l'I.H.P. Analyse non linéaire, Tome 10 (1993) no. 3, pp. 289-312. https://www.numdam.org/item/AIHPC_1993__10_3_289_0/

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