Description  Claims  Drawing  Cited references 

US4202200A   [0005] 
WO200608599A1   [0006] 
US20080250726A1   [0007] 
US4045997A   [0008] 
US20090248319A1   [0009] 
US5345809B1   [0010] 

The detection of evaporating hazardous material released from moving sources a gas sensor network   [0011]