Leipe, C., Sergusheva, E. A., Müller, S., Spengler III, R. N., Goslar, T., Kato, H., Wagner, M., Weber, A. W., & Tarasov, P. E. (2017). Barley (Hordeum vulgare) in the Okhotsk culture (5th–10th century AD) of northern Japan and the role of cultivated plants in hunter–gatherer economies. PLoS One,. doi: 10.1371/journal.pone.0174397.