00524naa#a2200157#i#450# EN\\bibl\33864 20250620120811.5 2071-7318 20200404b2020####ek#y0engy0150####ca RU CHOOSING THE TYPE OF GAS PISTON INSTALLATIONS FOR HEAT AND GAS SUPPLY IN RUSSIA Journal article Belgorod Belgorod State Technological University named after V.G. Shukhov 2020 13 с. Journal article local Bulanin V. A. bulletinbstu.editorum.ru