53

A geothermal recycling system for cooling and heating in deep mines

Year:
2017
Language:
english
File:
PDF, 855 KB
english, 2017
78

Coal use for power generation in China

Year:
2016
Language:
english
File:
PDF, 1.81 MB
english, 2016
80

An improved non-repudiation protocol and its security analysis

Year:
2004
Language:
english
File:
PDF, 473 KB
english, 2004