| Volcanic activity on Io at the time of the Ulysses encounter JR Spencer, RR Howell, BE Clark, DR Klassen, D O'Connor Science 257 (5076), 1507-1510, 1992 | 20 | 1992 |
| Principal components analysis of Mars in the near-infrared DR Klassen Icarus 204 (1), 32-47, 2009 | 16 | 2009 |
| Infrared spectral imaging of martian clouds and ices DR Klassen, JF Bell III, RR Howell, PE Johnson, W Golisch, CD Kaminski, ... Icarus 138 (1), 36-48, 1999 | 15 | 1999 |
| Radiance factor calibration of near-infrared spectral images of Mars DR Klassen, JF Bell III Icarus 163 (1), 66-77, 2003 | 7 | 2003 |
| Martian cloud modeling using NIR spectral images DR Klassen AAS/Division for Planetary Sciences Meeting Abstracts# 39 39, 24.12, 2007 | 5 | 2007 |
| Principal components analysis studies of martian clouds DR Klassen, JF Bell III AAS/Division for Planetary Sciences Meeting Abstracts# 33 33, 19.10, 2001 | 5 | 2001 |
| Updates on modeling the water cycle with the NASA Ames Mars global climate model MA Kahre, RM Haberle, JL Hollingsworth, F Montmessin, AS Brecht, ... International Workshop on the Mars Atmosphere: Modeling and Observations, 2017 | 4 | 2017 |
| Infrared imaging spectroscopy of Martian volatiles DR Klassen University of Wyoming, 1997 | 4 | 1997 |
| Principle components analysis of Mars at the 2003 opposition DR Klassen, TJ Wark, CG Cugliotta AAS/Division for Planetary Sciences Meeting Abstracts# 37 37, 33.09, 2005 | 3 | 2005 |
| High Spatial Resolution near-IR Imaging Spectroscopy of Mars from the IRTF During 1996-97 JF Bell III, DR Klassen, JE Moersch, WF Golisch, DM Griep, CD Kaminski, ... AAS/Division for Planetary Sciences Meeting Abstracts# 29 29, 04.12, 1997 | 3 | 1997 |
| Preliminary PCA/TT Results on MRO CRISM Multispectral Images DR Klassen, MD Smith AAS/Division for Planetary Sciences Meeting Abstracts# 42 42, 30.03, 2010 | 2 | 2010 |
| Preliminary results of PCA on MRO CRISM multispectral images DR Klassen, MD Smith AAS/Division for Planetary Sciences Meeting Abstracts# 40 40, 15.04, 2008 | 2 | 2008 |
| Mars NIR spectral imaging: PCA in the southern summer season DR Klassen AAS/Division for Planetary Sciences Meeting Abstracts# 36 36, 26.05, 2004 | 2 | 2004 |
| Seasonal comparison of Mars NIR principal components DR Klassen, JF Bell III AAS/Division for Planetary Sciences Meeting Abstracts# 35 35, 14.13, 2003 | 2 | 2003 |
| An investigation of martian volatiles using absolutely calibrated groundbased NIR images DR Klassen, JF Bell III AAS/Division for Planetary Sciences Meeting Abstracts# 32 32, 54.08, 2000 | 2 | 2000 |
| Spectroscopic Evidence for Diaspore ((-AlOOH) on Mars JF Bell III, EA Cloutis, DR Klassen, RN Clark Lunar and Planetary Science Conference, 1227, 2000 | 2 | 2000 |
| Imaging spectroscopy of Mars from 3 to 4 mum. JF Bell III, RN Clark, C Sagan, DR Klassen, TL Roush, D Crisp, ... Bulletin of the Astronomical Society, Vol. 28, No. 3, p. 1063-1064 28, 1063-1064, 1996 | 2 | 1996 |
| Principle components analysis of martian spectral images DR Klassen, RR Howell, P Johnson, JF Bell III AAS/Division for Planetary Sciences Meeting Abstracts# 28 28, 03.21, 1996 | 2 | 1996 |
| Volcanic Activity on Io during 1987 {1992: 4.8-m Photometry RR Howell, DR Klassen Submitted to Icarus, 1995 | 2 | 1995 |
| Modeling MARCI and TES aphelion cloud belt optical depth peak differences with the Ames MGCM DR Klassen, MA Kahre, MJ Wolff, RM Haberle, JL Hollingsworth The Mars Atmosphere: Modelling and observation, 3212, 2017 | 1 | 2017 |
