Celebratio Mathematica

R. J. Duffin and R. Bott: “Im­ped­ance syn­thes­is without use of trans­formers,” J. Ap­pl. Phys. 20 : 8 (1949), pp. 816. MR 0037753 article

R. Bott: “Some re­col­lec­tions from 30 years ago,” pp. 33–​39 in Con­struct­ive ap­proaches to math­em­at­ic­al mod­els: Pro­ceed­ings of a con­fer­ence in hon­or of R. J. Duffin (Pitt­s­burgh, PA, 10–14 Ju­ly 1978). Edi­ted by C. V. Coff­man and G. J. Fix. Aca­dem­ic Press (New York), 1979. MR 559485 Zbl 0467.​58012 incollection