The main channels of literature retrieval are:
First, libraries and information centers-the most important;
The second is to establish the necessary personal library and use it; ?
The third is to attend the meeting and obtain relevant materials; ?
Fourth, in-depth practical collection of archives; ?
The fifth is to search through the computer network.
2. how to find it?
(1) sequential search method, that is, search by time range, by time sequence of events, from far to near, from old to new. Generally, it can be searched completely, but the scope is wide and it takes more time.
(2) the reverse search method, that is, contrary to the sequential search method, from near to far, from new to old. It is mostly used to collect new documents, saving time, but it is difficult to miss the inspection.
(3) Introduction retrieval method, that is, using the references listed in the mastered literature and the references in the appendix as clues to find the literature on this subject. Advantages: the scope is relatively concentrated, it is convenient and fast to consult the literature, and the clues can be continuously expanded, but it is easily influenced by the authors of the literature. ?
(4) Comprehensive search method, that is, the method combining the above methods. ?