Approximate and relaxed solutions of differential inclusions
Rendiconti del Seminario Matematico della Università di Padova, Tome 81 (1989), pp. 229-238. 
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     author = {Colombo, Giovanni},
     title = {Approximate and relaxed solutions of differential inclusions},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {229--238},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {81},
     year = {1989},
     mrnumber = {1020197},
     zbl = {0688.34007},
     language = {en},
     url = {http://www.numdam.org/item/RSMUP_1989__81__229_0/}
}
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Colombo, Giovanni. Approximate and relaxed solutions of differential inclusions. Rendiconti del Seminario Matematico della Università di Padova, Tome 81 (1989), pp. 229-238. http://www.numdam.org/item/RSMUP_1989__81__229_0/

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