Chi-Jui Wu, Shen-Jhe Haung and Chien-Chang Chen
исследовательская статья
Raymond Miralbell, Hansjörg Vees, Osman Ratib, Michael Wissmeyer, Charles Steiner, Yann Seimbille, Haleem G. Khan and Franz Buchegger
исследовательская статья
Abdullahi Suleiman Gwani, Adamu Ahmad Adamu, Abubakar Tijjani Salihu and Adamu Ahmad RufaÂ’i
Обзорная статья