1. Karl Gustafson,Introduction to Partial Differential Equations and Hilbert Space Methods, Wiley, New York (1980).
2. Karl Gustafson,Introduction to Partial Differential Equations and Hilbert Space Methods, 2nd Edition, Wiley, New York (1987).
3. Karl Gustafson,Introduction to Partial Differential Equations and Hilbert Space Methods, 3rd Edition, Kaigai, Tokyo, published in two parts (in Japanese) as:Applied Partial Differential Equations, Introduction to Modern Methods, 1 (1991) 2 (1992), T. Abe and I. Onda, translators. Also published later in a limited English version by International Journal Services, Calcutta, India (1993). To appear (revised), Dover (1998).
4. T. Abe and I. Onda,Gustave Robin and his Contributions to Mathematics, International Symp. History of Math. Edu., Gunma University, Kiryu, Japan (1987),
5. T. Abe and I. Onda,Gustave Robin and his Contribution to Mathematical Sciences, International Conf. History of Science and Technology, Normal University, Huhhot, China (1992).