Engel, Konrad.
Sperner Theory - Cambridge CUP 1997 - 417 - Encyclopedia of mathematics & its applications ; 00065 .
0521452066
Sperner Theory
51(02) ENC
Sperner Theory - Cambridge CUP 1997 - 417 - Encyclopedia of mathematics & its applications ; 00065 .
0521452066
Sperner Theory
51(02) ENC