## No

Lötscher, Roland.
* Contributions to the essential dimension of finite and algebraic groups.*
2010,
Doctoral Thesis, University of Basel,
Faculty of Science.

Lötscher, Roland.
(2008)
* A generalized composition of quadratic forms based on quadratic pairs.*
arXiv.org e-Print archive [Elektronische Daten], 2008, arXiv:0809.4123.
pp. 1-22.

Lötscher, Roland.
(2008)
* Application of multihomogeneous covariants to the essential dimension of finite groups.*
arXiv.org e-Print archive [Elektronische Daten], 2008, arXiv:0811.3852.
pp. 1-34.

## Yes

Loetscher, Roland.
(2008)
* Quadratic and symmetric bilinear compositions of quadratic forms over commutative rings.*
Communications in Algebra, 36 (1).
pp. 258-268.