Firebird (Russian Folktale Series: 1) 俄國民間故事1：雅加婆婆與火鳥

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Firebird: Adventure One (Book #1 in Adventures of Alex and Katie series) is a modernized version of the Russian story of the Firebird, Жар-птица.

http://www.amazon.com/dp/B008AVXGA2

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Bába-Yagá (note the stress) is a well-known witch in Russian folklore (Баба-яга). This story is aimed at elementary and middle school students.

http://en.wikipedia.org/wiki/Baba_Yaga
http://zh.wikipedia.org/wiki/芭芭雅嘎：
芭芭雅嘎（Baba-Yaga），又譯作雅加婆婆，為俄羅斯等其他斯拉夫民族的童話及傳說中之女巫。她專吃小孩，在人們的心目中，是個充滿邪惡、神秘的角色。其女婿為一隻龍。