1 files changed, 14 insertions, 0 deletions
diff --git a/math.bib b/math.bib
index 72e66bf..13f9ecb 100644
--- a/math.bib
+++ b/math.bib
@@ -644,3 +644,17 @@
   publisher = {Editora Record},
   isbn      = {85-01-05006-7},
 }
+
+@article{evans1977,
+  title     = {From Abacus to Algorism: Theory and Practice in Medieval Arithmetic},
+  author    = {Evans, Gillian R.},
+  year      = {1977},
+  publisher = {Cambridge University Press},
+  journal   = {The British Journal for the History of Science},
+  issn      = {0007-0874,1474-001X},
+  volume    = {10},
+  issue     = {2},
+  pages     = {114},
+  doi       = {10.1017/s0007087400015375},
+  url       = {http://doi.org/10.1017/s0007087400015375},
+}