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-rw-r--r--buch/papers/punktgruppen/references.bib14
1 files changed, 12 insertions, 2 deletions
diff --git a/buch/papers/punktgruppen/references.bib b/buch/papers/punktgruppen/references.bib
index a29640c..7928b22 100644
--- a/buch/papers/punktgruppen/references.bib
+++ b/buch/papers/punktgruppen/references.bib
@@ -26,7 +26,7 @@
@book{punktgruppen:lang-elt2,
title = {Elektrotechnik 2},
- author = {Hans-Dieter Lang},
+ author = {Hans-Dieter Lang Ph.D},
publisher = {Fachhochschule Ostschweiz Rapperswil},
year = {2020},
month = {2},
@@ -35,10 +35,20 @@
@online{punktgruppen:ouchem,
title = {Symmetry in Crystallography},
- author = {Dept. of Chemistry \& Biochemistry, Chemical Crystallography Laboratory, University of Oklahoma},
+ author = {Dept. of Chemistry \& Biochemistry{,} Chemical Crystallography Laboratory{,} University of Oklahoma},
year = {2019},
month = {11},
day = {17},
url = {http://archive.today/2021.07.22-083802/http://xrayweb.chem.ou.edu/notes/symmetry.html},
urldate = {2021-07-22},
}
+
+@online{punktgruppen:restriction,
+ title = {Structure of Materials: Allowed Rotational Symmetry in Crystals},
+ author = {Silvija Gradecak-Garaj{,} Massachusetts Institute of Technology (MIT)},
+ year = {2020},
+ month = {4},
+ day = {9},
+ url = {https://www.youtube.com/watch?v=Ia2eHF1ZKoI},
+ urldate = {2021-07-30},
+}