Application of symmetry analysis to neutron diffraction / W. SIKORA // W: Symmetry and structural properties of condensed matter : proceedings of the 5\textsuperscript{th} International School on Theoretical Physics : Zajączkowo, Poland 27 August–2 September 1998 / eds. T. Lulek, B. Lulek, A. Wal. — Singapore [etc.] : World Scientific, 1999. — S. 352–362. — Bibliogr. s. 362

Symmetry analysis and neutron diffraction of magnetic structures / W. SIKORA // W: Physics of Magnetism '99 : the European conference : June 21–25, 1999 Poznań : abstracts / Adam Mickiewicz University. Institute of Physics ; Polish Academy of Sciences. Institute of Molecular Physics. — Poznań : Ośrodek Wydawnictw Naukowych, 1999. — S. 161

Symmetry analysis of magnetic ordering in $RFe_{4}Al_{8}$ ($R=La$, $Ce$, $Y$, $Lu$, and $Tb$) compounds / W. SIKORA, P. Schobinger-Papamantellos, K. H. J. Buschow // W: XVIIIth IUCr Congress & General Assembly : 4th–13th August 1999 Glasgow : abstracts. — [Glasgow : s. n.], [1999]. — S. 565. — Bibliogr. s. 565