1. Improved Atmospheric 3D BSDF Model in Earthlike Exoplanet using Ray-tracing Base Method;Ryu,2012
2. Breault Research Organization, “ASAP Reference Guide (2014)”, http://bro.com/knowledge-base/asap-reference-guide?nav=2207, 1–617 (2014)
3. SORCE TIM(Total Irradiance Monitor), Total Solar Irradiance, Solar Radiation and Climate Experiment (SORCE) http://lasp.colorado.edu/sorce/tsi_data/six_hourly/sorce_tsi_L3_c06h_latest.txt
4. Integrated ray tracing simulation of spectral bio-signatures from full 3D earth model;Ryu,2009
5. Integrated ray tracing simulation of annual variation of spectral bio-signatures from cloud free 3D optical Earth model;Ryu,2010