paper
5749
1980
5643
1980
5646
1977
5670
1983
5674
1979
5681
5682
5683
1982
5684
1981
5685
1982
5686
1979
5687
1980
5688
5635
1980
5689
1979
5636
1977
5690
1981
5637
1977
5707
