Retraction notice to “Gas electron multiplier (GEM) foil test, repair and effective gain calculation [Res. Phys. 9 (2018) 580–584]

• Muhammad Tahir,
• Muhammad Zubair,
• Tufail A. Khan,
• Ashfaq Khan,
• Asad Malook

Affiliations

Muhammad Tahir

Department of Physics, Allama Iqbal Open University, Islamabad 44000, Pakistan; Corresponding author.

Muhammad Zubair

Department of Chemistry, Quaid-I-Azam University, Islamabad 45320, Pakistan

Tufail A. Khan

Department of Basic Sciences, University of Engineering & Technology, Peshawar, Pakistan

Ashfaq Khan

Department of Mechanical Engineering, University of Engineering and Technology, Peshawar, Jalozai Campus, Pakistan

Asad Malook

Department of Computer Science, Sarhad University of Science and Information Technology, Peshawar, Pakistan