Literature review is the work done by researchers in past years. For this purpose, you will write your title in Google scholar and find the work done in past. I suggest you should download the articles of latest 10 years. Google scholar is the best engine

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Yes, definitely Google scholar is the key to searching for literature. Read the selected articles thoroughly and evaluate them. If the access to article download is not there then go for sci hub

Hello, during my master's degree I came across the same challenge. I would like to leave as a recommendation my master's thesis where I did a literature review on climate change.

Here are some suggestions and a great article that helped me immensely.

LINK: Article Ridiculously Good Writing: How to Write Like a Pro and Publi...

• First of all, to avoid getting lost in all the information, I recommend you create a table of content according to your vision and the point you want to discuss.
• The objective has to be done to this point.
• Then, you have to work on the type of content that you want, based on your vision (you can include patents, articles, books, reports, and clinic cases, among others), and that will help you to create tables, figures, statistical analysis, among other techniques.
• Then you start with the research. At this point will be easier to choose the right resources according to your goal.
• You can use Google Scholar, but I recommend reports of worldwide organizations (due to your topic), not only articles.