text 884 1317 1554 1958
text 884 605 1554 1240
text 147 1814 816 1958
abstract 175 606 788 1265
equation 1122 1242 1313 1314
title 544 270 1154 313
equation 358 1761 602 1797
text 147 1307 815 1746
author 292 384 1405 484
header 498 50 1200 76