1. Blomberg, R. D., Bishop, E. W. & Hamilton, J. W. (1995). Evaluation of prototype air carrier instrument approach procedure charts (DOT/FAA/95/44, DOT-VNTSC-FAA-95-24). Federal Aviation Administration.
2. Butchibabu, A. & Hansman, R. J. (2012). Evaluating the depiction of complex RNAV/RNP Procedures and analyzing a potential de-cluttering technique [Unpublished master’s thesis]. Massachusetts Institute of Technology. https://dspace.mit.edu/handle/1721.1/76094
3. Hansman, R. & Mykityshyn, M. (1995, March). An exploratory survey of information requirements for instrument approach charts. DOT/FAA/AAR-95/2. https://ntl.bts.gov/lib/33000/33500/33500/33500.pdf
4. Data density and poor organization