What are you seeking? Is it academic research into the subject or simply practical help for someone with the problem?
If it's the latter, this is well-reviewed:
http://tinyurl.com/ycy2cxrp
There's also this:
http://tinyurl.com/yapryj5o
(That one's available far cheaper on eBay though)
I doubt that there would be a big enough market for a regular journal aimed at sufferers and any academic articles on the subject would probably be published in a journal which encompasses a far wider range of topics, rather than there being a specific publication related to that fairly narrow area of speech impediments.