%0 Journal Article %T An inorganic-organic hybrid material based on a Keggin-type polyoxometalate@Dysprosium as an effective and green catalyst in the synthesis of 2-amino-4H-chromenes via multicomponent reactions %A Sara Hosseinzadeh Baghan, Sara %A Mirzaei Shahrabi, Masoud %A Eshtiagh Hosseini, Hossein %A وحیده زادسیرجان %A مجید هروی %A جول ت. مگ %J Applied Organometallic Chemistry %@ 0268-2605 %D 2020