R. D. Grappel

Internet over the VDL-2 Subnetwork: the VDL-2/IP Aviation Datalink System

R. D. Grappel, 2000 .

Issues Involved in the Development of an Open Standard for Data Link of Aviation Weather Information

R. D. Grappel, 2000 .

Guidance Material for Mode S-Specific Protocol Application Avionics

R. D. Grappel, R. T. Wiken, R. Grappel, 2007 .