Günter Ehrlich, Thomas Nestler, Rainer Voigtmann, Willi Moldenhauer: Objective comparison of concentration profiles in solids by means of mathematical statistics. In: Microchimica Acta. Band98, Nr.4, 1. Juli 1989, ISSN1436-5073, S.249–258, doi:10.1007/BF01244601.
Günter Ehrlich, Werner Kluge: Characterization of the chemical homogeneity of solids affected with periodical concentration fluctuations using the statistics of stochastic processes. In: Microchimica Acta. Band97, Nr.3, 1. Mai 1989, ISSN1436-5073, S.145–158, doi:10.1007/BF01242461.
Günter Ehrlich, Thomas Nestler, Rainer Voigtmann, Willi Moldenhauer: Objective comparison of concentration profiles in solids by means of mathematical statistics. In: Microchimica Acta. Band98, Nr.4, 1. Juli 1989, ISSN1436-5073, S.249–258, doi:10.1007/BF01244601.
Günter Ehrlich, Werner Kluge: Characterization of the chemical homogeneity of solids affected with periodical concentration fluctuations using the statistics of stochastic processes. In: Microchimica Acta. Band97, Nr.3, 1. Mai 1989, ISSN1436-5073, S.145–158, doi:10.1007/BF01242461.