Khound, A., Barua, P., Saud, B., Saikia, A., & Kumar, S. (2017). Piperine content variation in different Piper longum germplasms of North East India determined through RP-HPLC method. Journal of Applied and Natural Science, 9(2), 960–965. https://doi.org/10.31018/jans.v9i2.1304