If anyone can download these articles, it will be very helpful for me to finish my paper. I cannot get access to these articles in EBSCOhost and ProQuest. My university credential does not have access to ScienceDirect. See the list of institutions:

https://www.sciencedirect.com/customer/institutionchoice?targetURL=%2Fuser%2Frouter%2Flogin%3FtargetURL%3D%252Fscience%252Farticle%252Fpii%252FS0267364915001661

The list of the articles are:

https://www.sciencedirect.com/science/article/pii/S1877050917328624

https://www.sciencedirect.com/science/article/pii/S0267364915001661

https://www.sciencedirect.com/science/article/pii/S0007681315000865

https://www.sciencedirect.com/science/article/pii/S0747563216302990

https://dl.acm.org/citation.cfm?id=3188448

https://www.sciencedirect.com/science/article/pii/S0040162518301136

https://www.tandfonline.com/doi/abs/10.1080/09537325.2016.1269160?scroll=top&needAccess=true&journalCode=ctas20

https://ideas.repec.org/p/hal/journl/hal-01920679.html

https://www.tandfonline.com/doi/abs/10.1080/08874417.2016.1186524

Google sci hub. yesko extension change bhairakhcha. Yes bata you can open any article. Google sci hub, usually the first link is the correct one. Tya gayera tyo mathi kholna lageko paper ko link tesma paste garne and it will open it.

Add sci hub extension on your google chrome and live a scholarly life ever after

Be member of www.ResearchGate.net
Authors may have uploaded their works there or they can send article when requested.

Thank you nepali786, messages like yours make it worth it to lurk in sajha. learnt something new and really useful.