rambelli fabio nobody's mentioned this article yet written in japanese by this guy correct although not without a fair number of such as and not to mention being somewhat lacking in depth and more so a description of one man's experiences the author's it is nonetheless relatively academic and may be reasonable as a source for the article especially since there seems to be somewhat of a lack of sources actually written in japanese just thought i'd throw it out there additionally this article also popped up on google scholar and looked potentially interesting but it looks like i'll have to see if i can get an interlibrary loan in order to access it myself if someone has more immediate access than i do it may be worth looking up