Celebratio Mathematica

article S. S. Chern, J. Hano, and C. C. Hsiung: “A unique­ness the­or­em on closed con­vex hy­per­sur­faces in Eu­c­lidean space,” J. Math. Mech. 9 : 1 (1960), pp. 85–​88. MR 0116289 Zbl 0101.​13903

incollection S.-S. Chern and J. G. Wolf­son: “A simple proof of Frobeni­us the­or­em,” pp. 67–​69 in Man­i­folds and Lie groups: Pa­pers in hon­or of Yozô Mat­sushi­ma. Edi­ted by J.-I. Hano. Pro­gress in Math­em­at­ics 14. Birkhäuser (Bo­ston, MA), 1981. MR 642852 Zbl 0481.​58007