Foss, Willard E., Jr.:
A Computer Program for Detailed Analysis of the Takeoff and Approach
Performance Capabilities of Transport Category Aircraft.
NASA Technical Memorandum 80120, June 1979.
Hall, Albert W.:
Takeoff Distances of a Supersonic Transport Configuration as Affected
by Airplane Rotation During the Takeoff Run.
NASA Technical Note D-982, October 1961.
This program is designed to follow the letter of the law in defining
takeoff and landing field lengths.
The other main reference for this program is the collection of
Federal Aviation Administration Regulations, as many of the procedures
coded here are spelled out in the regulations.
You can read these regulations by going to the
FAA Site and following the link to
Federal Aviation Regulations under the heading
Regulations and Guidelines.
From there, you want Current Federal Aviation Regulations
and follow this on to Part 25 for Commercial Transport Aircraft.
This computer program is in accordance with the regulations as of
June 1979, but I cannot guarantee its current conformance.