Matsubayashi, Y., Takagi, L., Omura, N., Morita, A., & Sakagami, Y. (1999). The Endogenous Sulfated Pentapeptide Phytosulfokine-α Stimulates Tracheary Element Differentiation of Isolated Mesophyll Cells of Zinnia. American Society of Plant Physiologists.

Matsubayashi, Yoshikatsu, Leiko Takagi, Naomi Omura, Akiko Morita, and Youji Sakagami. The Endogenous Sulfated Pentapeptide Phytosulfokine-α Stimulates Tracheary Element Differentiation of Isolated Mesophyll Cells of Zinnia. American Society of Plant Physiologists, 1999.

Matsubayashi, Yoshikatsu, et al. The Endogenous Sulfated Pentapeptide Phytosulfokine-α Stimulates Tracheary Element Differentiation of Isolated Mesophyll Cells of Zinnia. American Society of Plant Physiologists, 1999.