TY  - RPRT
TI  - Application of method of characteristics to model the transport of discrete solids in partially-filled pipe flow 
AU  - Swaffield, J A
PY  - 1982
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS BSS 139
DO  - 10.6028/NBS.BSS.139
ER  -