1. Aardal NP (1984) Circannual variations of circadian periodicity in murine colony-forming cells (CFU-C). Exp Hematol 12: 61–67
2. Aardal NP, Laerum OD (1983) Circadian variations in mouse bone marrow. Exp Hematol 11: 792–801
3. Aardal NP, Laerum OD, Paukovits WR (1982) Biological properties of partially purified granulocyte extract (chalone) assayed in soft agar culture. Virchows Arch [B] Cell Pathol 38: 253–261
4. Abo T, Kawate T, Itoh K, Kumagai K (1981) Studies on the bioperiodicity of the immune response. I. Circadian rhythms of human T, B, and K cell traffic in the peripheral blood. J Immunol 126: 1360–1363
5. Abrahamsen JF, Smaaland R, Laerum OD (1994) Circadian stage dependent variations in the DNA synthesis phase of human bone marrow subpopulations. 6th international conference on chronopharmacology and chronotherapeutics, abstract VIIIa-2