Hyung-Wook Choi

Estimating Diesel Vehicle Emission Factors at Constant and High Speeds for Short Road Segments

H. Christopher Frey, Hyung-Wook Choi, H. Frey, 2010 .

Light duty gasoline vehicle emission factors at high transient and constant speeds for short road segments

H. Christopher Frey, Hyung-Wook Choi, H. Frey, 2009 .

The Effects of a Thyroid Shield Made of a Tissue-Equivalent Material on the Reduction of the Thyroid Exposure Dose in Panoramic Radiography

Hyung-Wook Choi, Chang-seon Lim, Hyeseon Lee, 2012 .

20.2: Dependence of the Discharge Characteristics and Efficacy on the Base Vacuum Level for High‐Efficiency PDP Panels Made Using an In‐Vacuum Sealing‐Pumping System

Hyung Wook Choi, Sang Jik Kwon, Jee Hoon Kim, 2005 .

Method for in-use measurement and evaluation of the activity, fuel use, electricity use, and emissions of a plug-in hybrid diesel-electric school bus.

H Christopher Frey, Hyung-Wook Choi, H. Frey, 2010, Environmental science & technology.