Celebratio Mathematica

W. Al-Salam, W. R. Allaway, and R. As­key: “Sieved ul­tra­s­pher­ic­al poly­no­mi­als,” Trans. Am. Math. Soc. 284 : 1 (1984), pp. 39–​55. MR 742411 Zbl 0547.​33005 article

W. Al-Salam, W. R. Allaway, and R. As­key: “A char­ac­ter­iz­a­tion of the con­tinu­ous \( q \)-ul­tra­s­pher­ic­al poly­no­mi­als,” Can. Math. Bull. 27 : 3 (1984), pp. 329–​336. MR 749641 Zbl 0537.​33004 article

R. As­key: “Di­vided dif­fer­ence op­er­at­ors and clas­sic­al or­tho­gon­al poly­no­mi­als,” pp. 33–​37 in Con­struct­ive Func­tion the­ory — 86 Con­fer­ence (Ed­mon­ton, AB, 22–26 Ju­ly 1986), published as Rocky Moun­tain J. Math. 19 : 1. Issue edi­ted by W. A. Al-Salam, Z. Dit­zi­an, and S. D. Riemenschneider. Ari­zona State Uni­versity (Tempe, AZ), 1989. MR 1016157 Zbl 0696.​33008 incollection