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JP2013100155A   [0008] 
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JP2017122033A   [0008] 
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JP2016127192A   [0008] 

The 61st Japan Society of Applied Physics Spring Meeting, Meeting Proceedings   [0009] 
The 4th Workshop on Power Device Silicon and Related Semiconductor Materials   [0009] 
Proceeding of the 27th International Symposium on Power Semiconductor Devices & IC's   [0009] 
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Physica B   [0009]