”Responses of permafrost to climate change and their environmental significance, Qinghai-Tibet Plateau”(på engelska).Journal of Geophysical Research112(F2): sid.F02S03. 8 June 2007. doi:10.1029/2006JF000631. ISSN0148-0227. Bibcode:2007JGRF..112.2S03C.
”The Birth and Growth of Porsild Pingo, Tuktoyaktuk Peninsula, District of Mackenzie”.Arctic41(4). 1 January 1988. doi:10.14430/arctic1731. ISSN1923-1245.
”Responses of permafrost to climate change and their environmental significance, Qinghai-Tibet Plateau”(på engelska).Journal of Geophysical Research112(F2): sid.F02S03. 8 June 2007. doi:10.1029/2006JF000631. ISSN0148-0227. Bibcode:2007JGRF..112.2S03C.
”The Birth and Growth of Porsild Pingo, Tuktoyaktuk Peninsula, District of Mackenzie”.Arctic41(4). 1 January 1988. doi:10.14430/arctic1731. ISSN1923-1245.
”Responses of permafrost to climate change and their environmental significance, Qinghai-Tibet Plateau”(på engelska).Journal of Geophysical Research112(F2): sid.F02S03. 8 June 2007. doi:10.1029/2006JF000631. ISSN0148-0227. Bibcode:2007JGRF..112.2S03C.