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Materials Science Poland > 2016 > Vol. 34, No. 4 > 845--850
Opto-Electronics Review > 2015 > Vol. 23, No. 3 > 195-199
Materials Science Poland > 2013 > Vol. 31, No. 4 > 543--547
Optica Applicata > 2013 > Vol. 43, nr 1 > 61--66