@article {Bertola:GenerationGC,
	title = {Generation of primordial fluctuations in curved spaces},
	journal = {Gravit. Cosmol.},
	volume = {4},
	number = {2},
	year = {1998},
	pages = {121{\textendash}127},
	issn = {0202-2893},
	author = {Schaeffer, Richard and Moschella, Ugo and Marco Bertola and Gorini, Vittorio}
}
