<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">David W. Piston</style></author><author><style face="normal" font="default" size="100%">Mark S. Kirby</style></author><author><style face="normal" font="default" size="100%">Heping Cheng</style></author><author><style face="normal" font="default" size="100%">W.J. Lederer</style></author><author><style face="normal" font="default" size="100%">Watt W. Webb</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Two-photon-excitation fluorescence imaging of three-dimensional calcium-ion activity</style></title><secondary-title><style face="normal" font="default" size="100%">Applied Optics</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1994</style></year></dates><pages><style face="normal" font="default" size="100%">662-669</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><issue><style face="normal" font="default" size="100%">4</style></issue></record></records></xml>