Denmark's referendum on the Maastricht treaty on Tuesday is the main event of the week. Trade data from the US, Japan and Germany, plus a glut of British numbers, will also feature. There are meetings of the Bundesbank on Wednesday and the US Federal Open Market Committee on Tuesday. Results from the Danish poll are expected late Tuesday night. Bundesbank President Helmut Schlesinger has ruled out a ''sledgehammer'' approach to interest rate cuts, but speculation continues that German rates could fall again this week. Britain on Tuesday releases its April industrial production statistics, the Bank of England's quarterly bulletin and a Confederation of British Industry trades survey. British retail sales data are due on Wednesday, unemployment figures on Thursday and inflation numbers on Friday. Trade statistics have not been major market movers of late, but this week there is data from Japan, the US and Germany. Data on Tuesday is expected to show the swollen Japanese trade and current account surpluses have made modest declines.