Berkaitan Richard Wagner Richard von Coudenhove-Kalergi Richard Huckle Richard Nixon Richard Feynman Richard Dawkins Richard I dari England Richardo Benito Richard Malanjum Richard Dreyfuss
Rujukan WikiPedia: Richard_Willstätter http://adsabs.harvard.edu/abs/1973ApOpt..12.2448A http://socialarchive.iath.virginia.edu/ark:/99166/... //www.ncbi.nlm.nih.gov/pubmed/20125799 //www.ncbi.nlm.nih.gov/pubmed/4874034 http://aleph.nli.org.il/F/?func=find-b&local_base=... http://data.bibliotheken.nl/id/thes/p157216306 //doi.org/10.1098%2Frsbm.1953.0021 //doi.org/10.1364%2FAO.12.002448 http://isni.org/isni/0000000110703576 //www.jstor.org/stable/769233
