Article 57 1.      Unless the General Secretariat orders otherwise, a service provider shall, from the date on which the tariff or tariff revision is filed until the tariff or tariff revision is approved, publish an electronic copy on its website and maintain a paper copy thereof, available to the public, at its principal place of business. 2.      The service provider shall, within ten 10 days from the day on which the tariff or tariff revision is filed, place a notice of the tariff filing summarizing its contents and specifically identifying its effects, including its commercial impact on customers, in two local newspapers published in Arabic and English, or as otherwise directed by the General Secretariat. Dominant Service Providers shall also comply with the tariff information and disclosure requirements of Articles 97, 98 and 99 of this By-Law and License Terms.   Article 58 Tariffs charged by a Dominant Service Provider to other service providers shall be filed with and subject to approval by the General Secretariat in accordance with Article 29 of the Law and Article 56 of this By-Law; and the terms of the License. Those tariffs must also comply with the orders issued by the General Secretariat.   Article 59 1.      The General Secretariat may require a Dominant Service Provider to prepare or participate in:   a.      The development of a cost study of its telecommunications services if it determines that a cost study would be an effective and necessary means of addressing the effects of dominant or significant market power preventing anticompetitive conduct, or would otherwise be effective and necessary in implementing any scheme of tariff or price regulation; and b.        The development of a cost study for the purpose of determining the costs of providing different types of telecommunications services or business activities of the service provider.   2.      The General Secretariat shall decide on the categories, form, approach, procedures and timing of the cost study, and the service provider shall comply with all requirements identified by the General Secretariat and shall file the study with the General Secretariat.   3.          The General Secretariat shall consult with the service provider required to file a cost study and any other interested parties before it makes an order requiring the study. The General Secretariat may require a Dominant Service Provider to adopt identified cost accounting practices to facilitate cost studies or to achieve any other regulatory purpose under the Law or this By-Law, including the separation of accounts among different categories of business activities or services or as directed by the General Secretariat.