(k) lack of potential competition; (l) various kinds of informal or other links between the undertakings concerned; (m) retaliatory mechanisms; and (n) lack or reduced scope for price competition. (4) Where an operator has significant market power in a specific market, it may also be deemed to have significant market power in an adjacent market, where the links between the two markets are such as to allow the market power held in one market to be leveraged into the other market, thereby strengthening the market power of the undertaking. Imposition of obligations on undertakings having significant market power 50. (1) The Authority has the right to impose obligations on operators having significant market power on the relevant market, taking account of their appropriateness in each specific case and setting the starting moment in time for the fulfillment of those obligations. (2) The obligations imposed on operators by the Authority must be reasonable, based on the nature of the problem identified, proportionate and justified in the light of the principles and objectives of the regulation of information and communications activities. (3) Where it is established on the basis of a relevant market analysis that the market characteristics do not justify the imposition of obligations referred to in this section or that there are no operators having significant market power in the market, the Authority shall(a) not impose, in accordance with the procedure and conditions set out in this Act, the obligations referred to in this Act; and (b) withdraw the obligations, if any, imposed on the operators having significant market 71