Measurement of low light intensities with the help of counters.

[1] Mitogenetic radiation [J]. BIOLOGICAL REVIEWS OF THE CAMBRIDGE PHILOSOPHICAL SOCIETY, 1935, 10 (01): : 42 - 71

[2] Bomke H, 1931, ANN PHYS-BERLIN, V10, P579

[3] A spark gap with air-cooled electrodes [J]. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA AND REVIEW OF SCIENTIFIC INSTRUMENTS, 1923, 7 (11): : 1027 - 1029

[4] Certain physical properties of single crystals of tungsten, antimony, bismuth, tellurium, cadmium, zinc, and tin. [J]. PROCEEDINGS OF THE AMERICAN ACADEMY OF ARTS AND SCIENCES, 1925, 60 (1/14): : 305 - 383

[5] CHRISTOPH W, 1933, PHYS Z, V34, P644

[6] de Laszlo H, 1932, PHILOS MAG, V13, P1171

[7] FRANK, 1693, BIOCHEM Z, V249, P322

[8] On the spread of the discharge in Elektronenzaehlrohr [J]. ZEITSCHRIFT FUR PHYSIK, 1933, 81 (7-8): : 543 - 555

[9] GUDDEN B, 1928, LICHTELEKTR ERSCHEIN, P28

[10] HARRISON GB, 1924, PHYS REV, V24, P469

[1] Mitogenetic radiation [J]. BIOLOGICAL REVIEWS OF THE CAMBRIDGE PHILOSOPHICAL SOCIETY, 1935, 10 (01): : 42 - 71

[2] Bomke H, 1931, ANN PHYS-BERLIN, V10, P579

[3] A spark gap with air-cooled electrodes [J]. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA AND REVIEW OF SCIENTIFIC INSTRUMENTS, 1923, 7 (11): : 1027 - 1029

[4] Certain physical properties of single crystals of tungsten, antimony, bismuth, tellurium, cadmium, zinc, and tin. [J]. PROCEEDINGS OF THE AMERICAN ACADEMY OF ARTS AND SCIENCES, 1925, 60 (1/14): : 305 - 383

[5] CHRISTOPH W, 1933, PHYS Z, V34, P644

[6] de Laszlo H, 1932, PHILOS MAG, V13, P1171

[7] FRANK, 1693, BIOCHEM Z, V249, P322

[8] On the spread of the discharge in Elektronenzaehlrohr [J]. ZEITSCHRIFT FUR PHYSIK, 1933, 81 (7-8): : 543 - 555

[9] GUDDEN B, 1928, LICHTELEKTR ERSCHEIN, P28

[10] HARRISON GB, 1924, PHYS REV, V24, P469