EuroPub
PKP (Public Knowledge Project)
GIF (Global Impact Factor)(GIF2013=0.489), India
San José State University (California, United States) library
Google Scholar, USA
Index Copernicus, Poland
Genamics Journal Seek, USA
JournalTOCs, USA
BASE (Bielefeld Academic Search Engine), Germany
WorldWideScience
ROAD - Directory of Open Access Scholary Resources
CrossRef USA
Academia
iThenticate
ScienceOpen
CIVILICA
FreeFullPDF
Journals Directory
Advanced Sciences Index
ISI
Root Indexing
IE Library
Iranjournals
Moraref
DRJI
I2OR
Cosmos
AURA
