Sorry, as I said, there is no research paper at all. Nobody care about neolithic foreigners in Korea.
However, it was shocking that long skulls with crouched positions were found 3 or 4 years ago. Only the reporters were concerned with the sensational issue.
So they traced the origin of sample. They requested the above mentioned research center to get aDNA, where they got only mtDNA H. With the DNA, they went germany to meet so many scholars. German geneticist told them that modern people don't have that H, but EEF at germany had. And they concluded that the people were EEF from germany. But I don''t think the neolithic weakest EEF could not enter korean peninsular, b/c Korea was surrounded by neolithic wolf and lions, Hg N, R and Q at that time. so I thought R or Q carried Hg H or woman w/ Hg H.
Their pottery was similar to
The Linear Pottery OF GERMANY.: