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, e 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.