figure 344 224 1354 434
caption 297 471 1402 596
text 297 861 1402 1157
equation 612 783 1401 859
equation 426 1920 1401 2041
text 297 1425 1404 1915
text 297 647 1402 786
equation 469 1162 1401 1227
text 297 1230 1402 1373
equation 531 1377 1401 1422