TY - CONF AU - Wittmann, Ronald AU - Young, M. C2 - Tech. Dig., Symp. on Optical Fiber Meas., Boulder, CO DA - 1998-09-01 00:09:00 LA - en PB - Tech. Dig., Symp. on Optical Fiber Meas., Boulder, CO PY - 1998 TI - Are the Formulas for Mode-Field Diameter Correct? ER -