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Operating Expenses, Depreciation and Amortization | 12 Months Ended
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Dec. 31, 2020
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Operating Expenses, Depreciation and Amortization |
6) | OPERATING EXPENSES, DEPRECIATION AND AMORTIZATION
Consolidated operating expenses during 2020, 2019 and 2018 by function are as follows:
|  |  |  |  | 2020 |  |  | 2019 |  |  | 2018 |
Administrative expenses 1 |  | $ |  |  |  |  | 1,076 |  |  |  | 1,112 |  |  |  | 1,130 |
Selling expenses |  |  |  |  |  |  | 337 |  |  |  | 371 |  |  |  | 312 |
Distribution and logistics expenses |  |  |  |  |  |  | 1,423 |  |  |  | 1,489 |  |  |  | 1,537 |
|  | $ |  |  |  |  | 2,836 |  |  |  | 2,972 |  |  |  | 2,979 |
1 | All significant R&D activities are executed by several internal areas as part of their daily activities. In 2020, 2019 and 2018, total combined expenses of these departments recognized within administrative expenses were $31, $38 and $39, respectively.
Depreciation and amortization recognized during 2020, 2019 and 2018 are detailed as follows:
|  |  |  |  | 2020 |  |  | 2019 |  |  | 2018 |
Included in cost of sales |  | $ |  |  |  |  | 921 |  |  |  | 865 |  |  |  | 853 |
Included in administrative, selling and distribution and logistics expenses |  |  |  |  |  |  | 196 |  |  |  | 180 |  |  |  | 129 |
|  | $ |  |  |  |  | 1,117 |  |  |  | 1,045 |  |  |  | 982 |

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- Definition The disclosure of expenses. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 10 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_10_e&doctype=Standard -URIDate 2020-01-01 + Details
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