1. Dumitru, O.A., Forray, F.L., Fornos, J.J., Ersek, V., Onac, B.P. 2017: An assessment of stable isotopes variability in precipitation, cave drip, and groundwater from Mallorca Island, Western Mediterranean. Hydrological Processes, 31: 104-116; doi: http://dx.doi.or/10.1002/hyp.10978

  2. Boop, L.M., Wynn, J.G., Thompson, G., Fornos, J.J., Onac, B.P. 2017: Interactions between surface conditions, the Mediterranean Sea, and cave climate within two littoral caves in Mallorca: controls on the formations of the phreatic overgrowths on speleothems. Journal of Cave and Karst Studies, 79 (1): 59-72; doi:10.4311/2016ES0114

  3. Persoiu, A., Onac, B.P., Wynn, J.G., Blaauw, M., Ionita, M., Hansson, M. 2017: Holocene winter cli ate variability in Central and Eastern Europe. Scientific Reports, 7: 1196 DOI:10.1038/s41598-017-01397-w

  4. Cleary, D.M., Onac, B.P., Forray, F.L., Wynn, J.G. 2016: Controls on d15N values of cave bat guano: an assessment for reconstructing paleoclimate and environmental changes. Palaeogeography, Palaeoclimatology, Palaeoecology, 461: 87-97,

  5. Dumitru, O.A., Onac, B.P., Cosma, C. 2016: Radon levels in caves from San Salvador, The Bahamas: A reconnaissance survey. Carbonates & Evaporites, 31: 153-161; doi: 10.1007/s13146-015-0251-8

  6. Cucos (Dinu), A., Calugar, M.I., Burghele, B.D., Dumitru, O.A., Cosma, C., Onac, B.P. 2016: Radon levels in Romanian caves: An occupational survey survey. Environmental Geochemistry and Health, doi: 10.1007/s10653-016-9878-1

  7. Forti, P., Onac, B.P. 2016: Caves and mineral deposits. Zeitschrift fur Geomorphologie (Suppl. X), 60: 55-101; doi: 10.1127/zfg_suppl/2016/S-60X04

  8. Dumitru, O.-A., Onac, B.P., Fornos, J.J., Cosma, C. 2015: Radon concentration and effective dose assessment in Coves de Campanet (Mallorca Island, Spain). Journal of Radioanalytical and Nuclear Chemistry, 303: 885-890; doi: 10.1007/s10967-014-3511-5

  9. Onac, B.P., Hutchison, S.M., Geanta, A., Forray, F.L., Wynn, J.G., Giurgiu, A.C., Coroiu, I. 2015: A 2500-year Late Holocene multi-proxy record of vegetation and hydrologic changes from a cave guano-clay sequence in SW Romania. Quaternary Research, 83: 437-448;

  10. Forray, F.L., Onac, B.P., Tantau, B., Wynn, J.G., Tamas, T., Coroiu, I., Giurgiu, A. 2015: A Late Holocene environmental history of a bat guano deposit from Romania: an isotopic and pollen study. Quaternary Science Reviews, 127: 141-154;

  11. Boop, L.M., Onac, B.P., Wynn, J.G., Fornos, J.J., Rodriguez-Homar, M., Merino, A. 2014: Groundwater geochemistry observations in littoral caves of Mallorca (western Mediterranean): implications for deposition of phreatic overgrowths on speleothems. International Journal of Speleology 43 (2): 193-203.

  12. Florea, L.J., Vacher, H.L., Donahue, B., Naar, D., 2007: Quaternary cave levels in peninsular Florida, Quaternary Science Reviews 26: 1344-1361.

  13. Florea, L.J., Vacher, H.L. 2007: Eogenetic karst hydrology: Insights from the 2004 hurricanes, peninsular Florida: Ground Water 45(4): 439-446.

  14. Onac, B.P., Effenberger, H.S., Wynn, J.G., Povara, I. 2013: Rapidcreekite in the sulfuric acid weathering environment of Diana Cave, Romania. American Mineralogist 98: 1302-1309;

  15. Onac, B.P., Forray, F.L., Wynn, J.G., Giurgiu, A.M. 2013: Guano-derived d13C-based paleo-hydroclimate record from Gaura cu Musca Cave, SW Romania. Environmental Earth Sciences 71 (9): 4061-4071; doi: 10.1007/s12665-013-2789-x

  16. Polk. J.S., van Beynen, P.E., Polyak, V., Asmerom, Y. 2013: Reconstructing Past Climates using Carbon Isotopes from Fulvic Acids in Cave Sediments. Chemical Geology 360-361: 1-9.

  17. Sampson, J., Guilbeault, K. 2013: Baseline physicochemical investigations on waters from three blue holes, San Salvador Island, Bahamas, Studia UBB Geologia 58 (1): 11-19;

  18. van Beynen, P.E., Bialkowska-Jelinska, E. 2012: Human disturbance of the Waitomo Catchment, New Zealand. Journal of Environmental Management 108: 130-40.

  19. van Beynen, P.E., Brinkmann, R., van Beynen, K.M. 2012: Creation of a sustainability index for karst environments. Journal of Cave and Karst Studies 74 (2): 21-234.

  20. Wynn, J.G., Sumrall, J.B., Onac, B.P. 2010: Sulfur isotopic composition and the source of dissolved sulfur species in thermo-mineral springs of the Cerna Valley, Romania, Chemical Geology 271: 31-43.