BEIJING — Historians from Japan and China are planning to release a report later this month on the outcome of a three-year joint history research project, including what could be a significant meeting of minds on the fighting in China between 1937 and 1945.

Still, gaps in perception of some events, including the 1989 Tiananmen Square crackdown, will prevent the two sides from releasing any research on postwar history.

But the results of the joint studies that concluded in late December in ancient, medieval and modern history will be made available in the report. It contains 26 papers, half of them written by Japanese researchers and the other half by Chinese scholars.