@articleBidaraguppe Ramesh_Schmidt_Schindlmayr_2021, title=Lattice parameters and electronic band gap of orthorhombic potassium sodium niobate K0.5N.5NbO3 from density-functional theory, volume=94, DOI=10.1140/epjb/s10051-021-00179-8, number=8169, journal=The European Physical Journal B, publisher=EDP Sciences, Società Italiana di Fisica and Springer, author=Bidaraguppe Ramesh, Nithin and Schmidt, Falko and Schindlmayr, Arno, year=2021 

@articleLiu_2016, title=Influence of strong screening effect on the perpendicular- polarized linear excitonic absorption spectra of semiconducting carbon nanotubes, volume=89, DOI=10.1140/epjb/e2016-70476-8, journal=The European Physical Journal B, author=Liu, Hong, year=2016, pages=230