Survey of Japanese weeds and crops for the detection of water-extractable allelopathic chemicals using RICHARDS' function fitted to lettuce germination test.

FUJII, Y., SHIBUYA, T., & YASUDA, T. (1990). Survey of Japanese weeds and crops for the detection of water-extractable allelopathic chemicals using RICHARDS’ function fitted to lettuce germination test. Journal of Weed Science and Technology, 35(4), 362–370. https://doi.org/10.3719/weed.35.362