1

Edward Yourdon, Techniques of Program Structure and Design, Prentice Hall PTR, Upper Saddle River, NJ, 1986

2

Joseph Shortt , Thomas C. Wilson, Problem Solving and the Computer: A Structured Concept with PL 1 (PLC), Addison-Wesley Longman Publishing Co., Inc., Boston, MA, 1990

3

Kenneth Conrow , Ronald G. Smith, NEATER2: a PL/I source statement reformatter, Communications of the ACM, v.13 n.11, p.669-675, Nov 1970  [doi>10.1145/362790.362796]

4

Wijngaarden, A. Van, ed., "Revised Report on the Algorithmic Language ALGOL 68", <u>ACM SIGPLAN Notices</u> 12, 5 (May, 1977), 1--70.

5

<u>IBM System/360 Operating System PL/I(F) Programmer's Guide</u>, ninth edition (September 1972).

6

Bohl, M., <u>Flowcharting Techniques</u>, Scientific Research Associates, Chicago, 1971.

7

Ben Shneiderman , Richard Mayer , Don McKay , Peter Heller, Experimental investigations of the utility of detailed flowcharts in programming, Communications of the ACM, v.20 n.6, p.373-381, June 1977  [doi>10.1145/359605.359610]

8

Henry F. Ledgard , William C. Cave, Cobol under control, Communications of the ACM, v.19 n.11, p.601-608, Nov. 1976  [doi>10.1145/360363.360366]

Gerard K. Rambally, The influence of color on program readability and comprehensibility, ACM SIGCSE Bulletin, v.18 n.1, p.173-181, February 1986

Richard J. Miara , Joyce A. Musselman , Juan A. Navarro , Ben Shneiderman, Program indentation and comprehensibility, Communications of the ACM, v.26 n.11, p.861-867, Nov. 1983

Peter Grogono, On layout, identifiers and semicolons in Pascal programs, ACM SIGPLAN Notices, v.14 n.4, April 1979

John Ramsdell, Prettyprinting structured programs with connector lines, ACM SIGPLAN Notices, v.14 n.9, September 1979

Dennis W. Leinbaugh, Indenting for the compiler, ACM SIGPLAN Notices, v.15 n.5, p.41-48, May 1980

Rodney M. Bates, A PASCAL prettyprinter with a different purpose, ACM SIGPLAN Notices, v.16 n.3, p.10-17, March 1981

John Van Zandt, On visual and textual structures, ACM SIGPLAN Notices, v.15 n.5, p.78-80, May 1980

Mouloud Arab, Tool for making programs more readable, ACM SIGCSE Bulletin, v.23 n.3, p.31-35, Sept. 1991

Mouloud Arab, Enhancing program comprehension: formatting and documenting, ACM SIGPLAN Notices, v.27 n.2, p.37-46, Feb. 1992