20E

• Griess, Robert L., Jr.; Ryba, A. J. E.: Embeddings of PGL₂(31) and SL₂(32) in E₈(C). With appendices by Michael Larsen and J.-P. Serre. Duke Math. J. 94 (1998) 181–211.
• Barnea, Y.; Larsen, M.: A non-abelian free pro-p group is not linear over a local field. J. Algebra 214 (1999) 338–341.
• Larsen, Michael; Lubotzky, Alex
• Larsen, Michael; Lubotzky, Alex: Representation Growth for Linear Groups. J. Eur. Math. Soc. 10 (2008) 351–390.