TY  - RPRT
TI  - Mathematical approaches to evaluating aircraft vertical separation standards 
AU  - Gilsinn, Judith F
AU  - Shier, Douglas R
PY  - 1976
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 76-1067
DO  - 10.6028/NBS.IR.76-1067
ER  -