Meddelelser fra Finsens medicinske lysinstitut. Kjöbenhavn. 165 p. 1899.
1894, Kjöbenhavn. (In Hospitalstidende, p. 1209-1239.)
[8.] Gillespie, C. G. K.
Physical effects of air pollution. 12 dr. 1887. (In Manchester and Salford Noxious Vapors Abatement Association. Lectures on air pollution, no. 5, p. 55-70.)
[9.] Hall, G. Stanley, & Wallin, J. E. Wallace.
How children and youth think and feel about clouds. 1902. (In Pedagogical seminary, v. 9, p. 460-506.)
[10.] Kershaw, John B. C.
Notes on recent progress in the campaign against black smoke in the United Kingdom. 1912. (In Papers read at the Smoke Abatement Conferences, March ... 1912, p. 68-75.)
[11.] Lemon, J. S.
Psychic effects of the weather. 1894. (In American journal of psychology, v. 6, p. 277-279.)