Celebratio Mathematica

P. Baum, W. Fulton, and R. MacPh­er­son: “Riemann–Roch for sin­gu­lar vari­et­ies,” Inst. Hautes Études Sci. Publ. Math. 45 (1975), pp. 101–​145. MR 412190 Zbl 0332.​14003 article

P. Baum, W. Fulton, and R. MacPh­er­son: Riemann–Roch and to­po­lo­gic­al $K$-the­ory for sin­gu­lar vari­et­ies. Pre­print 42, Aar­hus Uni­versity Math­em­at­ics In­sti­tute, 1977. A ver­sion of this was later pub­lished in Acta Math. 143:3–4 (1979). Zbl 0355.​14008 techreport

P. Baum, W. Fulton, and R. MacPh­er­son: “Riemann–Roch and to­po­lo­gic­al $K$ the­ory for sin­gu­lar vari­et­ies,” Acta Math. 143 : 3–​4 (1979), pp. 155–​192. A pre­print was pub­lished in 1977. MR 549773 Zbl 0474.​14004 article

P. Baum, J.-L. Bryl­in­ski, and R. MacPh­er­son: “Co­homo­lo­gie équivari­ante délocal­isée” [De­lo­c­al­ized equivari­ant co­homo­logy], C. R. Acad. Sci. Par­is Sér. I Math. 300 : 17 (1985), pp. 605–​608. MR 791098 Zbl 0589.​55003 article

P. Baum: “Work­ing with Bott (rock­ing and rolling with Raoul),” pp. xxii–​xxiii in Raoul Bott: Col­lec­ted pa­pers, vol. 3: Fo­li­ations. Edi­ted by R. MacPh­er­son. Con­tem­por­ary Math­em­aticians. Birkhäuser (Bo­ston), 1995. MR 1321887 incollection

P. Baum, N. Hig­son, and T. Schick: “On the equi­val­ence of geo­met­ric and ana­lyt­ic $K$-ho­mo­logy,” pp. 1–​24 in Spe­cial is­sue: In hon­or of Robert D. MacPh­er­son, Part 3, published as Pure Ap­pl. Math. Q. 3 : 1. In­ter­na­tion­al Press (Som­merville, MA), 2007. MR 2330153 Zbl 1146.​19004 incollection