为什么期刊论文没有期号

这是电子期刊，只有文献号（简写为art. no.）没有纸质期刊的卷、期、页码。下面是从英国物理学会IOP的author guidelines里摘录的一段：===============. References to electronic-only journals. Article numbers are usually given with no page ranges asmost electronic-only journals start each article on page 1. For New Journal of Physics (article numbermay have from one to three digits) see , for SISSA journals the volume is divided into monthlyissues and these form part of the article number, as in andFischer R 2004 Bayesian group analysis of plasma-enhanced chemical vapour deposition data New. . 6 25Horowitz G T and Maldacena J 2004 The black hole final state J. High Energy Phys. JHEP02(2004)008