Plant Systematics and Evolution, Vol. 139, No. 1/2 (1981), pp. 121-136 (16 pages) Considerable structural and numerical chromosomal variation has been found in natural populations of Alopecurus.

Reflections on the history of systematics / Robert E. Kohler -- Willi Hennig's part in the history of systematics / Michael Schmitt -- Homology as a bridge between evolutionary morphology, ...

We discuss the origin and size of potential uncertainties arising in the estimate of cross sections for the production of multiparticle final states induced by QCD instantons at the LHC. Note: 5 pages ...