Celebratio Mathematica

W. Jäger, P. Lax, and C. S. Mor­awetz: “Olga Ar­sen’evna Oleĭnik (1925–2001),” No­tices Am. Math. Soc. 50 : 2 (2003), pp. 220–​223. Eng­lish ver­sion of a Rus­si­an lan­guage art­icle in Trudy Sem­in­ara imeni I. G. Pet­rovskogo 2003:23 (2003). Also pub­lished in J. Math. Sci. 120:3 (2004). MR 1951108 Zbl 1159.​01335 article

V. Eger, P. Laks, and K. Moravets: “Olga Ar­sen’evna Oleĭnik,” Tr. Semin. im. I. G. Pet­rovskogo 2003 : 23 (2003), pp. 7–​15. An Eng­lish ver­sion of this art­icle ap­peared in J. Math. Sci. 120:3 (2004) and in No­tices Am. Math. Soc. 50:2 (2003). MR 2085178 article

W. Jäger, P. Lax, and C. S. Mor­awetz: “Olga Ar­sen’evna Olein­ik,” J. Math. Sci. 120 : 3 (2004), pp. 1242–​1246. Eng­lish ver­sion of a Rus­si­an lan­guage art­icle in Tr. Semin. im. I. G. Pet­rovskogo 2003:23 (2003). Also pub­lished in No­tices Am. Math. Soc. 50:2 (2003). Zbl 1077.​01014 article