A: The special retrieval channels of patent documents include: patentee, inventor, patent classification number, patent application number, patent application date, patent publication (notice) number, patent publication (notice) date, patent assignee, patent agent, patent agency, patent specification, etc.

The special retrieval methods of conference documents include: conference name, conference place, conference date, conference organizer, conference organizer, etc.

The special retrieval methods of dissertations include: tutor, major, school, degree type, etc.