1Herrmann F. The Karlsruhe Physics Course[J]. Europe- an Journal Physics, 2000,21 ( 1 ) .. 49-58.
2Budde M. , Niedderer H. , Scott P. , Leach J.. "Electroni- um"..a quantum atomic teaching model[J]. Physics Edu- cation,2002,37(3) :197-203.
3Budde M. ,Niedderer H. ,Scott P. , Leach J.. The quan- tum atomic model "Electronium" a success[ul teaching tool[J]. Physics Education, 2002,37 ( 3 ) : 204-210.