progress on python version of reg alloc

book.bib

@@ -1,4 +1,11 @@
-
+@book{Russell2003,
+author = {Russell, Stuart J. and Norvig, Peter},
+title = {Artificial Intelligence: A Modern Approach},
+year = {2003},
+isbn = {0137903952},
+publisher = {Pearson Education},
+edition = {2},
+}
 
 @Misc{PSF21:cpython,
   title = 	 {CPython github repository},