| Butti and Perlin 1981, p | 181• International Energy Agency |
|---|---|
| Tadesse I, Isoaho SA, Green FB, Puhakka JA 2003 | EAWAG The Swiss Federal Institute for Environmental Science and Technology |
| TO Engineering | New Resources Group |
|---|---|
| Tiwari 2003 , p | Perlin and Butti 1981 , p |
| 5 2 | 850 |
|---|---|
| 5, 442—446, English translation: Ukr |