  Following Skorobogatov and Serganova we construct the embeddings of universal
torsors over del Pezzo surfaces in the cones over flag varieties, considered as
the closed orbits in the projectivization of quasiminiscule representations. We
give the approach that allows us to construct the embeddings of universal
torsors over del Pezzo surfaces of the degree one. This approach uses the
Mumford stability and slightly differs from the approach of the authors named
above.
