Dunajski, Maciej; Tod, Paul Paraconformal geometry of \(n\)th-order ODEs, and exotic holonomy in dimension four. (English) Zbl 1096.53028 J. Geom. Phys. 56, No. 9, 1790-1809 (2006). MSC: 53C29 53A55 53C28 34A26 PDF BibTeX XML Cite \textit{M. Dunajski} and \textit{P. Tod}, J. Geom. Phys. 56, No. 9, 1790--1809 (2006; Zbl 1096.53028) Full Text: DOI arXiv OpenURL
Bĕlohlávková, Jana; Mikeš, Joseph; Pokorna, Olga \(4\)-planar mappings of almost quaternionic and almost antiquaternionic Spaces. (English) Zbl 0969.53006 Gen. Math. 5, 101-108 (1997). Reviewer: M.Craioveanu (Timişoara) MSC: 53B10 53C55 53C26 PDF BibTeX XML Cite \textit{J. Bĕlohlávková} et al., Gen. Math. 5, 101--108 (1997; Zbl 0969.53006) Full Text: EuDML OpenURL
LeBrun, Claude On complete quaternionic-Kähler manifolds. (English) Zbl 0764.53045 Duke Math. J. 63, No. 3, 723-743 (1991). Reviewer: V.Oproiu (Iaşi) MSC: 53C55 53C15 PDF BibTeX XML Cite \textit{C. LeBrun}, Duke Math. J. 63, No. 3, 723--743 (1991; Zbl 0764.53045) Full Text: DOI OpenURL