no. 4
The free laplacian with attractive boundary conditions
Annales de l'I.H.P. Physique théorique, Tome 46 (1987) no. 4, pp. 373-382. 
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     title = {The free laplacian with attractive boundary conditions},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {373--382},
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     volume = {46},
     number = {4},
     year = {1987},
     mrnumber = {912155},
     zbl = {0643.58031},
     language = {en},
     url = {http://www.numdam.org/item/AIHPA_1987__46_4_373_0/}
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Englisch, H.; Schröder, M.; Šeba, P. The free laplacian with attractive boundary conditions. Annales de l'I.H.P. Physique théorique, Tome 46 (1987) no. 4, pp. 373-382. http://www.numdam.org/item/AIHPA_1987__46_4_373_0/

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