@article{10_4171_dm_53,
     author = {Detlev W. Hoffmann},
     title = {On a conjecture of {Izhboldin} on similarity of quadratic forms},
     journal = {Documenta mathematica},
     pages = {61--64},
     year = {1999},
     volume = {4},
     doi = {10.4171/dm/53},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/dm/53/}
}