1. The Hall algebra of the category of coherent sheaves on the projective line;Baumann;J. Reine Angew. Math.,2001
2. Coherent sheaves on Pn and problems of linear algebra;Beilinson;Funct. Anal. Appl.,1978
3. Coxeter functors, and Gabriel's theorem;Bernstein;Uspekhi Mat. Nauk,1973