- Ritter, J.A.; McIntyre, J. A.; Ebner, A. D.; Al-Muhtaseb, S.A.; Holland, C.E. “Stripping and Enriching Reflux Pressure Swing Adsorption Process for High Enrichment and Recovery of Dilute Hydrocarbons.” © The University of South Carolina, 2001.
- Al-Muhtaseb, S.A.; Ritter, J.A.; Holland, C.E. “PSA Performance and Operating Condition Calculator for Single Adsorbable Components Using the Equilibrium Theory Model.” © The University of South Carolina, 2001.
- Al-Muhtaseb, S.A.; Danielle, K.D.; Ritter, J.A.; Holland, C.E. “Pressure Swing Adsorption Design and Training Calculator for Gas Purification Processes with Unfavorable Adsorption Isotherms.” © The University of South Carolina, 2001.
- Al-Muhtaseb, S.A.; Ritter, J.A.; Holland, C.E. “Pressure Swing Adsorption Performance and Training Calculator (PSACalc-1A).” © The University of South Carolina, 2000.
- Liu, Y.; Ritter, J.A.; Holland, C.E.; Al-Muhtaseb, S.A. “Pressure Swing Adsorption Simulator.” © The University of South Carolina, 2000.