Coming to Regensburg …
… by plane usually is via Munich (MUC), approx.. 110 km from Regensburg. Alternatively, you may use the airport Nuremberg (NUE), also some 110 km from Regensburg. From both airports to Regensburg (and back) you may use public transport (see http://www.bahn.de/p_en/view/index.shtml for finding connections and booking tickets).
Note that from/to MUC, the best connection is not via Munich central, but by bus between MUC/Freising, changing to the train between Freising/Regensburg.
From MUC to Regensburg there is a convenient private shuttle service that brings you to directly to your hotel. For this service, advance booking is required at http://www.airportliner.com/en/. The shared transfer option is available for 42 € per leg, discounts are available if two or more persons with the same drop-off/pick-up address book together.
Moving around in Regensburg …
… is most convenient using the bus lines that run quite frequently. The conference venue is just a minute from the bus stop “Regensburg Universität”. Travel time to/from the old town (and most hotels) is about 10 minutes. For more details see http://www.rvv.de/?lang=en and the conference brochure.
Coming by Car
There is ample and free parking space directly to the north of the conference building. For further directions, you might want to have a look at http://www.uni-regensburg.de/kontakt/index.html . For your navigation system: the address is Universitätsstrasse 31, Regensburg.
are included in the conference brochure.