For citations:
Zain H.A., Batumalay M., Rahim H.A., Harith Z., Yasin M., Harun S.W. Surface plasmon resonance optical sensor for COVID-19 detection. Nanosystems: Physics, Chemistry, Mathematics. 2021;12(5):575-582. https://doi.org/10.17586/2220-8054-2021-12-5-575-582