@article{HellmannGockel2013, author = {Ralf Hellmann and Tilo Gockel}, title = {Optische Charakterisierung von Leuchtdioden}, journal = {Zeitschrift ELEKTOR, Sonderheft LED-Special 4 - Leuchtdioden in Theorie und Praxis, 2012}, number = {9}, pages = {40 -- 46}, year = {2013}, }