Jyrki Manninen

title	ISBN-13 (ISBN-10)	year of publica- tion	other author(s)
Aurores Boréales	978-951-31-2738-1 (951-31-2738-9)	2003	Martti Rikkonen · Esa Turunen
Northern Lights	978-951-31-1350-6 (951-31-1350-7)	1995	Martii Rikkonen · Esa Turunen