(From MMikami, 20011120, updated 20041022)

"Ingenta"
http://www.ingenta.com/

By clicking the button "search options,"
we can try simple literature surveys (title, authors, ...).

Though we have much better search engines for such purpose,
most of them are not free. The Ingenta site is available with no cost ...


"Scirus - for scientific information only"
http://www.scirus.com/srsapp/
For details, http://www.scirus.com/srsapp/aboutus/
