Sojourn times of trapping rays and the behavior of the modified resolvent of the laplacian
Annales de l'I.H.P. Physique théorique, Tome 62 (1995) no. 1, pp. 17-45. 
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     title = {Sojourn times of trapping rays and the behavior of the modified resolvent of the laplacian},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
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     zbl = {0838.35093},
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     url = {http://www.numdam.org/item/AIHPA_1995__62_1_17_0/}
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Petkov, Vesselin; Stoyanov, Latchezar. Sojourn times of trapping rays and the behavior of the modified resolvent of the laplacian. Annales de l'I.H.P. Physique théorique, Tome 62 (1995) no. 1, pp. 17-45. http://www.numdam.org/item/AIHPA_1995__62_1_17_0/

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