text 150 1769 812 1951
text 851 881 1506 1308
text 151 1185 806 1539
text 851 1794 1505 1909
equation 1019 793 1503 860
abstract 206 632 752 1116
equation 955 1934 1503 2000
text 851 635 1506 773
equation 1024 1720 1503 1770
text 852 1479 1387 1512
equation 343 1564 803 1635
text 852 1629 1506 1695
equation 974 1537 1384 1605
equation 1015 1396 1340 1467
equation 324 1686 633 1755
text 851 1374 927 1400
equation 1015 1310 1340 1360
text 151 1659 227 1685
title 494 250 1164 290
author 152 392 1476 554