1990 A New Dance Emerged

In reading an article about Japanese dancing I came across a type of dance which is oviously not new today because it was suppose to be invented in 1990 for children, but in this article that I didn't get the date, there is a discussion on a "DETARME" Dance. I am hoping that possibly someone reading this post will be able to help me get some curent information about this DTARME dance. I love seeing dances in any form, but the Japanese have some graceful ways of moving in their dance that displays grace and style.
The word "DETARME" is said to mean that there is a random, haphazard type of wild or irresponsible, "Unpredictable", yet strictly choreographed movement.
In 1960 a Detarme was in existence, how this dance is called Datarme, also, and it's in 1960. an earlier date, I don't know. But the this article stated that the 1960 Detare caused the development of something call "Butoh". This is I assume is also a dance. Which leads me to wonder about the timing in these dances. How could they both or when did they both really exist, and do they really exist today.
Hopfully, some one can help me with some more information about these two exciting dances for children. These dances seem different from the dances I know of. Because the Japanese dances I have seen are very delicate and graceful in nature. If there is a dance such as the two I just mentioned, I need to learn more about them.
This information was written down during my visit tothe Japanese American Museum at one of their exhibits.
exhibit. Anyway, in 1960 this Detarme dance developed a "BUTOH". There was no explaination of this word, only that both dances grew out of eras when Japanese people were raising question about their identity.
Maybe if someone reads this article, that reader will be able to explain a little more about where to see these dances, and a little more about how they were created. I can see teaching these dances to my students. I like to incorporate all "Avenues" in my teaching.