Author
Akademii͡a nauk SSSR. Quantum Bureau
1
American Association of Physics Teachers
1
Institute of Physical Energetics (Latvijas Zinātn̦u akadēmija)
1
National Council of Teachers of Mathematics
1
National Science Teachers Association
1
Rossiĭskai͡a akademii͡a nauk. Quantum Bureau
1
Sumsʹkyĭ derz͡havnyĭ universytet
1