Green finance is significant since it is the first organized effort by the financial industry to link financial performance with a positive environmental impact. Green finance products are being developed appropriately to achieve sustainability. The present study employs a fundamental bibliometric methodology to assess the current state and progress of academic research on green finance. 1748 papers are taken for this study. Data are extracted from a scholarly database i.e., SCOPUS and for network analysis, VOSviewer software is used. The present paper is focused on six research questions. Information is gathered to examine the above research questions and network maps are applied. We examined year-wise document publications, types of documents, subject areas, most influential articles, different journal sources, co-authorship of countries, and co-occurrence of keywords of green finance. We categorized keywords into clusters and discovered new trends in green finance. The paper also highlighted the recent issues and challenges. The study has also certain limitations and it is concluded by providing implications and suggestions for future studies. At last, this paper will give more insights to researchers, academicians, and others to discover the research gaps in this field of green finance.

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Vehicular Ad-Hoc Networks (VANETs) have gained popularity due to their ideal characteristics and wide range of applications. In VANETs, every vehicle is capable of acting as a routing device to transmit the data as well as an endpoint vehicular node for the processing of transmitted data. Various routing protocols were proposed for VANETs to determine the paths between the two vehicular nodes. The majority of these protocols were derived from the protocol designs of MANETs. Due to the distinct traits of nodes in the VANETs, there is the need for appending security features to the existing protocols for reliable and secure communication among the vehicular networks. VANET Secure routing protocols can be of three main classes, namely, Cryptography based, Trust-based and Hybrid protocols. In this paper, we surveyed various Trust-based security mechanisms to actively secure the communications taking place between the vehicular nodes. Also, the surveyed Trust-based protocols were compared to determine the effectiveness and working strategies of each of them.

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