Tu+` Diem Quynh: Ti`m: GS Nguye^~n Hu*~u Vie^.t Hu*ng Ca'c ba'c, ba.n be` bo^'n bie^?n! Xin cho to^i ho?i tha(m. Anh Bi`nh co' nho*` to^i nha('n ti`m giu'p GS Nguye^~n Hu*~u Vie^.t Hu*ng, khoa toa'n cu?a DHTH Ha` no^.i, dda~ co' mo^.t tho*`i gian Post-doc. o*? Berkeley . Xin lie^n la.c ve^` diemquynhng@hotmail.com CHa^n tha`nh ca?m o*n Diemquynh