Any request by one or more heirs of a deceased partner, pursuant to the second paragraph of article 24 of law no. 66-879 of 29 November 1966, to the preferential allocation to them of the shares of their author is notified to the company and to each of the partners by registered letter with acknowledgement of receipt. In the event of disagreement, the value of the company rights is set in accordance with the conditions set out in article 1843-4 of the Civil Code.