<Tr> <Th> Frequency </Th> <Td> 18 / year </Td> </Tr> <Tr> <Th> Impact factor (2013) </Th> <Td> 0.769 </Td> </Tr> <Tr> <Th_colspan="2"> Indexing </Th> </Tr> <Tr> <Th> ISSN </Th> <Td> 0030 - 4026 </Td> </Tr>

Optik international journal for light and electron optics