asmaa soheil najm, abu bakar mohamad & norasikin a. ludin.  (2017).  the extraction and absorption study of natural dye from areca catechu for dye sensitized solar cell application.  - american institute if physic (aip) conference proceeding.  2001-2007. 

nur fairuz mohd rostan, suhaila sepeai, noor fadhilah ramli, ayu wazira azhari, norasikin ahmad ludin, mohd asri mat teridi, mohd adib ibrahim, saleem h zaidi.  (2017).  characterization of perovskite layer on various nanostructured silicon wafer.  - the 1st ukm-isesco-comsats international workshop on nanotechnology for young scientists (iwys2016),aip conference proceeding.  201-207. 

b bakhtyar, a zaharim, k sopian, omidreza saadatian, n.a. ludin.  (2012).  the effects of feed in tariff on foreign direct investment in malaysia.  - advances in environment, biotechnology and biomedicine : 1st wseas international conference on energy and environment technologies and equipment (eeete `12).  . 

omidreza saadatian, lim chin haw, k sopian, elias salleh, n.a. ludin.  (2012).  solar walls: the neglected components of passive designs.  - advances in environment, biotechnology and biomedicine : 1st wseas international conference on energy and environment technologies and equipment (eeete `12).  . 

asim, n., sadaatian, o., ludin, n.a., reza faraji zonooz, m., sopian, k..  (2012).  perspective of agriculture wastes usage as a resource.  - 2nd international conference on chemical engineering and advanced materials, ceam 2012;guangzhou (advanced materials research).  .