2018. A Review of Stress analysis of Helical Compression Spring for Toggle Switch Mechanism. International Journal of Engineering Research and Advanced Technology (ijerat) (E-ISSN 2454-6135) DOI: 10.31695/IJERAT. 4, 7 (Jul. 2018), 25–30. DOI:https://doi.org/10.31695/IJERAT.2018.3297.