Introduction.- Electrons in mesoscopic low-dimensional systems.- Coherent electronic transport: Landauer-B?ttiker formalism.- Stationary scattering in planar confining geometries.- Computational quantum transport in multiterminal and multiply connected structures.- Magnetoconductance switching by phase modulation in arrays of oval quantum billiards.- Current control in soft-wall electron billiards: energy-persistent scattering in the deep quantum...