no. 2
An optimal viscosity profile in the secondary oil recovery
ESAIM: Modélisation mathématique et analyse numérique, Tome 32 (1998) no. 2, pp. 211-221. 
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     title = {An optimal viscosity profile in the secondary oil recovery},
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     pages = {211--221},
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     volume = {32},
     number = {2},
     year = {1998},
     mrnumber = {1622608},
     zbl = {0910.76084},
     language = {en},
     url = {http://www.numdam.org/item/M2AN_1998__32_2_211_0/}
}
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Carasso, C.; Pasa, G. An optimal viscosity profile in the secondary oil recovery. ESAIM: Modélisation mathématique et analyse numérique, Tome 32 (1998) no. 2, pp. 211-221. http://www.numdam.org/item/M2AN_1998__32_2_211_0/

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