TY  JOUR
TI  IMPROVING THE EFFICIENCY OF SOLAR WATER HEATERS
KW  solar energy collectors
KW  solar water heaters
KW  multistage solar collectors
KW  energy efficiency
KW  technical and economic effectiveness
JO  Vestnik of Astrakhan State Technical University
AU  Ilyin, R..
AU  Shishkin, N..
PY  2016
IS  2016
PB  Astrakhan State Technical University