Technogenic effect of liquidation of coal mines on earth's entrails: hydrogeochemical aspect,
Tarasenko,  I. A.,  A. V.  Zinkov,  O. V.  Chudaev, A. V. Vetoshkina, I. I. Holodilov  (2017),
IOP Conference Series: Earth and Environmental Science, 87, 4, 
10.1088/1755-1315/87/4/042022.