- liveinternet.ru users/laotzu/bloghttp://www.woodworkingonline.com/2009/02/26/sharpening-stone-boxes/.
- liveinternet.ru users/laotzu/post372644000/http://www.woodworkingonline.com/2009/02/26/sharpening-stone-boxes/.
- liveinternet.ru users/laotzu/http://www.woodworkingonline.com/2009/02/26/sharpening-stone-boxes/.