As of 04/20/2018 - 10:00, this link is reporting 302 - Found.
The Central and Eastern European Online Library (CEEOL) is an Internet library and document distributor of articles from cultural and scientific publications from and about Central, Eastern, and South-East Europe. Abstracts can be viewed, but full text must be purchased. Prices are in Euros. Site in English, but many publication titles are in native language, so Extended Latin or Cyrillic support is helpful.
Homepage of the "Seminar fuer Osteuropaeische Geschichte" (Institute for East European History) of the "Universitaet zu Koeln" (Cologne University) in Germany. Contains information about the institute's history, e-mail and snail-mail addresses, phone numbers, and courses offered for the current semester. In German.