1 files changed, 26 insertions, 0 deletions
diff --git a/math.bib b/math.bib
index 119ac44..443d70c 100755
--- a/math.bib
+++ b/math.bib
@@ -266,3 +266,29 @@
   edition   = {Tallinn},
   volume    = {},
 }
+
+@article{hartley1928,
+  doi       = {10.1002/j.1538-7305.1928.tb01236.x},
+  title     = {Transmission of Information 1},
+  author    = {Hartley, R. V. L.},
+  journal   = {Bell System Technical Journal},
+  issn      = {0005-8580},
+  year      = {1928},
+  volume    = {7},
+  issue     = {3},
+  pages     = {535--563},
+  url       = {http://doi.org/10.1002/j.1538-7305.1928.tb01236.x}
+}
+
+@article{nyquist1924,
+  doi       = {10.1002/j.1538-7305.1924.tb01361.x},
+  title     = {Certain Factors Affecting Telegraph Speed 1},
+  author    = {Nyquist, H.},
+  journal   = {Bell System Technical Journal},
+  issn      = {0005-8580},
+  year      = {1924},
+  volume    = {3},
+  issue     = {2},
+  pages     = {324--346},
+  url       = {http://doi.org/10.1002/j.1538-7305.1924.tb01361.x}
+}