Merge pull request #34 from softdevteam/non_lr_error_recovery_papers

A couple of LL/PEG error recover papers.

Author: ptersilie

softdev.bib

@@ -1986,3 +1986,25 @@ @phdthesis{gal06efficient
     month = Nov,
     year = 2006
 }
+
+@inproceedings{medeiros18syntax,
+    author = "Medeiros, S\'ergio and Mascarenhas, Fabio",
+    title = "Syntax Error Recovery in Parsing Expression Grammars",
+    booktitle = "SAC",
+    year = 2018,
+    month = Apr,
+    pages = "1195--1202",
+    doi = "10.1145/3167132.3167261",
+}
+
+@article{turner77error,
+    author = "D. A. Turner",
+    title = "Error diagnosis and recovery in one pass compilers",
+    journal = "IPL",
+    volume = "6",
+    number = "4",
+    pages = "113--115",
+    year = "1977",
+    month = Aug,
+    doi = "10.1016/0020-0190(77)90023-0"
+}