It contains both fulltext articles and abstracts. It contains both fulltext articles and abstracts. ScienceDirect , provides access to more than 839 fulltext scientific, medical and technical journals and to a significant database of abstracts. Coverage extends from 1996 to date. Subjects covered include electrical and electronic components and equipment, electrical and magnetic materials, semiconductors, lasers, physics, instrumentation and measurements.
Years of coverage vary.
Web of Science , supplier Institute for Scientific Information, is the online version of Science Citation Index. It is searchable by bibliographic information including topic, author, source, address and cited reference.