Karl Otto Greulich: Calculation of the Masses of All Fundamental Elementary Particles with an Accuracy of Approx. 1%. In: Journal of Modern Physics. Band1, Nr.5, 2010, S.300–302, doi:10.4236/jmp.2010.15042.
Greulich: Another loophole for the Bell inequalities. In: SPIE Proceedings Vol. 7421: The Nature of Light: What are Photons? III. 2009, doi:10.1117/12.825893.
Greulich: A nonquantum mechanical explanation of the single photon double slit experiment. In: SPIE Proceedings Vol. 7421: The Nature of Light: What are Photons? III. 2009, doi:10.1117/12.825886.