TY  - RPRT
TI  - Strength of joints in unreinforced cellular concrete beams 
AU  - Kirstein, Arthur F
AU  - Shirley, Harvey M
PY  - 1958
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS RPT 5990
DO  - 10.6028/NBS.RPT.5990
ER  -