Upper and lower integral difference functionals, closest approximations, and integrability
Rendiconti del Seminario Matematico della Università di Padova, Volume 52  (1974), p. 1-24
@article{RSMUP_1974__52__1_0,
author = {Appling, William D. L.},
title = {Upper and lower integral difference functionals, closest approximations, and integrability},
journal = {Rendiconti del Seminario Matematico della Universit\a di Padova},
publisher = {Seminario Matematico of the University of Padua},
volume = {52},
year = {1974},
pages = {1-24},
zbl = {0325.28006},
mrnumber = {404565},
language = {en},
url = {http://www.numdam.org/item/RSMUP_1974__52__1_0}
}

Appling, William D. L. Upper and lower integral difference functionals, closest approximations, and integrability. Rendiconti del Seminario Matematico della Università di Padova, Volume 52 (1974) , pp. 1-24. http://www.numdam.org/item/RSMUP_1974__52__1_0/`

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