http://books.google.hu/books?id=2ljhWDIopusC&dq=Excel+Hacks+-+100+Industrial-Strength+Tips+%26+Tools&printsec=frontcover&source=bl&ots=3d78OomYvK&sig=auaGKsCVLtQzMZfw18cSR6P1_2c&hl=hu&ei=jxruSdiuCIyK_QaRkunoDw&sa=X&oi=book_result&ct=result&resnum=11#PPA247,M1

lemaradt :)