IATE-1348902

Subject Field	unknown
Is Reference of	Réduction de vitesse de groupe de propagation-fr#Sense
	Hidastus-fi#Sense
	Ritardo-it#Sense
	Forsinkelse-da#Sense
	Retardação-pt#Sense
	Retardation-en#Sense
	Verminderung der Gruppengeschwindigkeit-de#Sense
	Retardation-sv#Sense
	Verzögerung-de#Sense
	Επιβράδυνση-el#Sense
	Vertraging-nl#Sense
	Moilliú-ga#Sense
	Retardo-es#Sense
	Retardation av grupphastigheten-sv#Sense
	Lefékezés-hu#Sense