1994A&A...285...94P
1994A&A...285...94P
1994A&A...285...94P
1994A&A...285...94P
1994A&A...285...94P
1994A&A...285...94P
1994A&A...285...94P
1994A&A...285...94P
1994A&A...285...94P
1994A&A...285...94P
1994A&A...285...94P
1994A&A...285...94P
1994A&A...285...94P
1994A&A...285...94P
1994A&A...285...94P
1994A&A...285...94P
1994A&A...285...94P
1994A&A...285...94P
1994A&A...285...94P
1994A&A...285...94P
1994A&A...285...94P
1994A&A...285...94P
1994A&A...285...94P
1994A&A...285...94P
1994A&A...285...94P