WIP

thesis.bib

@@ -2477,4 +2477,23 @@
   pages     = {124--144},
   publisher = {Springer},
   year      = {1991}
+}
+
+# Computation trees
+@article{Kleene59,
+  author    = {Stephen C. Kleene},
+  title     = {Recursive Functionals and Quantifiers of Finite Types I},
+  journal   = {Transactions of the {AMS}},
+  volume    = {91},
+  pages     = {1--52},
+  year      = {1959}
+}
+
+@article{Kleene63,
+  author    = {Stephen C. Kleene},
+  title     = {Recursive Functionals and Quantifiers of Finite Types II},
+  journal   = {Transactions of the {AMS}},
+  volume    = {108},
+  pages     = {106--142},
+  year      = {1963}
 }