1. [Bulut 1973] Bulut Necdet. Invariant properties of algorithms. PhD Thesis Purdue University (August 1973) 118-119. [Bulut 1973] Bulut Necdet. Invariant properties of algorithms. PhD Thesis Purdue University (August 1973) 118-119.
2. [Bulut 1974] Bulut Necdet and Halstead Maurice H. Inpurities found in algorithm implemnetations. CSD-TR 111 Purdue University (1974). [Bulut 1974] Bulut Necdet and Halstead Maurice H. Inpurities found in algorithm implemnetations. CSD-TR 111 Purdue University (1974).
3. Natural laws controlling algorithm structure?
4. [Halstead 1977] Halstead Maurice H. Elements of Software Science. Elsevier North Holland New York. (1977) (in press). [Halstead 1977] Halstead Maurice H. Elements of Software Science . Elsevier North Holland New York. (1977) (in press).