In Scopus you can use the Web Importer - select all references (on the page) or select individual ones and import them
If you want to export all items (in this case 157), select all and use the Export button.
Here you can choose how you want to export. If you select Mendeley, the references will be thrown into All documents and you will not have control over which fields you get. When you select RIS, you can select the information you need to include. We advise you to choose the first three columns
Once you have clicked on export, choose Save file in the window that appears - and then drag it into Mendeley - see under Import> browsers