Geodesic
On the positivity of the Green function of linear boundary value problems for fourth-order equations on a graph
Izvestiâ vysših učebnyh zavedenij. Matematika, no. 2 (1999), pp. 75-82 
Yu. V. Pokornyi; R. Mustafokulov. On the positivity of the Green function of linear boundary value problems for fourth-order equations on a graph. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 2 (1999), pp. 75-82. http://geodesic.mathdoc.fr/item/IVM_1999_2_a8/
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     title = {On the positivity of the {Green} function of linear boundary value problems for fourth-order equations on a~graph},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {75--82},
     year = {1999},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1999_2_a8/}
}
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Voir la notice de l'article provenant de la source Math-Net.Ru

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