TY - ICOMM AU - Hougen, Jon AU - Wiersma, G C1 - http://physics.nist.gov/Methane C2 - http://physics.nist.gov/Methane DA - 2002-01-01 LA - en PB - http://physics.nist.gov/Methane PY - 2002 TI - Methane Symmetry Operations ER -