Hotelling, Harold (1925). "A General Mathematical Theory of Depreciation". Journal of the American Statistical Association. 20 (151): 352. doi:10.2307/2965518. ISSN0162-1459. JSTOR2965518.
Hotelling, Harold (1931). "Review of Mathematical Introduction to Economics". Journal of Political Economy. 39 (1): 109. doi:10.1086/254176. ISSN0022-3808. JSTOR1821753.
Hotelling, Harold (1925). "A General Mathematical Theory of Depreciation". Journal of the American Statistical Association. 20 (151): 352. doi:10.2307/2965518. ISSN0162-1459. JSTOR2965518.
Hotelling, Harold (1931). "Review of Mathematical Introduction to Economics". Journal of Political Economy. 39 (1): 109. doi:10.1086/254176. ISSN0022-3808. JSTOR1821753.
Hotelling, Harold (1925). "A General Mathematical Theory of Depreciation". Journal of the American Statistical Association. 20 (151): 352. doi:10.2307/2965518. ISSN0162-1459. JSTOR2965518.
Hotelling, Harold (1931). "Review of Mathematical Introduction to Economics". Journal of Political Economy. 39 (1): 109. doi:10.1086/254176. ISSN0022-3808. JSTOR1821753.