Zhou, Wei; Kou, Aiqing; Chen, Jin; Ding, Bingqing - In: Energy Reports 4 (2018), pp. 724-732
In recent years, some countries are facing the problem of energy security. Energy security is an important factor … affecting the national economy and environment. There are many investigations about energy security, but few of them are … countries, institutions, sources, authors, and interesting research directions in the energy security researches are visually …