Reference
Ana-Voica Bojar, Brigitte Rieser, Franz Neubauer, Hans-Peter Bojar, Johann Genser, Yongjiang Liu, Xiaohong Ge (2004): Anomalous isotopic composition of carbonates from Quaternary evaporitic deposits, Western Qaidam, China: evidence for thermogenic derived methane. – Berichte des Institutes für Geologie und Paläontologie der Karl-Franzens-Universität Graz – 8: 10 - 11.