Obstructions for Clifford Structures on Vector Bundles. Ulrich Schwardmann (1982) Mathematische Zeitschrift
Obstructions to the section problem in a fibration with a weak formal base. Saneblidze, S. (1997) Georgian Mathematical Journal
On classification of immersions of n-manifolds in (2n-1)-manifolds. Li Banghe (1982) Commentarii mathematici Helvetici
On Sectioning multiples of vector bundles and more general homomorphism bundles. Július Korbas (1994) Manuscripta mathematica
On the fundamental group of a space of sections. E. Thomas, L.L. Larmore (1980) Mathematica Scandinavica