T. Tagai u. L. Schröpfer (2016): Siebold's "De Mineralogia Japonica". Acta Sieboldiana X. Wiesbaden, Harrassowitz Verlag.
T. Tagai (2022): Zwei Tagebücher während der Reise nach Jedo 1826 von H. Bürger und P.F. von Siebold. Acta Sieboldiana XI. Wiebaden, Harrassowitz Verlag.
↑ (1) T. Tagai, W. Joswig, M. Korekawa and H.- R. Wenk (1980): Die Bestimmung der Al/Si-Verteilung mittels Neutronenbeugung in einem Plagioklas An66. Zeit. Krist., 151, 77-89. (2) W. Horst, T. Tagai, M. Korekawa and H. Jagodzinski (1981): Modulated structure of a plagioclase An52: Theory and structure determination. Zeit. Krist., 157, 233-250.
↑ (1) T. Tagai (1988): Vulkanisches Glas und Ca-reicher Anorthoklas von Mt. Erebus, Antarktis. N. Jb. Min. Mh., h2, 167-174. (2) T. Tagai, T. Hoshi, M. Suzuki and H. Takeda (1994): Crystal structures and diffraction characteristics of the calcic plagioclases from three monomict eucrites: ALH85001, Serra de Mage and Moore County. Meteoritics, 29-4,538-539.
↑ (1) T. Hoshi, T. Tagai and M. Suzuki (1996): Investigations on Boggild intergrowth of intermediate plagioclase by high resolution transmission electron microscopy. Zeits. Krist., 211, 879-883. (2) T. Hoshi and T. Tagai (1997): TEM investigation of potassium-calcium feldspar inclusions in Boggild plagioclase. Amer. Mineral., 82, 1073-1078.
↑ (1) T. Tagai, A. Mikouchi (2008): Mineral collections and Lapidographia Japonica by P. F. Siebold. Univ. Mus. Univ. Tokyo, Bull. No. 43, 1-282. (2) T. Tagai, A. Mikouchi (2010a): The old Japanese mineral collections in Leiden, the Netherland. Rocks and Minerals, No. 5, Vol. 85, 450-452. (3) T. Tagai, A. Mikouchi (2010b): Mineral collection of Philipp Franz von Siebold (II). in ‘Mineral and fossil collections of Philipp Franz von Siebold’ ed. by T. Tagai and T. Sasaki, Univ. Mus. Univ. Tokyo, Bull. No. 45, 1-212. (4) T. Tagai, A. Mikouchi, M. Forrer (2012): Japanese collection related to natural history in the National Museum of Ethnology, Leiden, the Netherlands. Univ. Mus. Univ. Tokyo, Bull. No. 48, 1-199.