Kalashnikova O. Yu., a* , Nurbacina A.A. b , Niyazov J.B. c
a Central Asian Institute of Applied Geosciences, 73/2 Timur Frunze St., Bishkek, 720027, Kyrgyz Republicb Institute...
Christopher Conrad a, Gerd Schmidt a, Maira Kussainova b
aMartin Luther University Halle-Wittenberg, Universitätsplatz 10, 06108, Germany
bKazakh-German University,...