Several practitioners from Guyer & Regules come highly recommended and competitors note that the top firm is well known “for having good relationships [with clients]”. A client comments that the firm “is very professional” and “if you have to schedule a meeting, they are here the next day”. The firm aims to negotiate agreements with the tax authorities and work on tax due diligence, in addition to tax planning, tax audits and business restructuring, among other activities. Partner and CPA Nicolás Juan is frequently commended for his transfer pricing work. Partner Nicolás Piaggio leads the M&A specialist area. Partner Juan Manuel Albacete is recommended by strong competitors for its capital markets and financial products skills. Albacete is an assistant professor of tax law at the University of Uruguay, school of law and is the secretary of the Latin American Tax Institute. Albacete and associate Valentina Larrobla assisted the Swedish-Finnish paper company Stora Enso in the largest M&A deal in Uruguay history. On October 2009, the Spanish pulp producer Group ENCE sold the majority of its Uruguayan assets to Stora Enso and Chilean Group pulp producer Celulosa Arauco, in a deal worth $ 344 million. Guyer & Regules also advised Citigroup Global Markets in September 2009 in an international and domestic offer valued at $500 million, with Barclays acting as the underwriters in the issuance and sale. Other advisory work includes advising Brazilian conglomerate Petrobras on tax issues raised during their search for oil and gas in Uruguay. Spanish oil and gas company Repsol YPF and Brazilian meat packing multinational Marfrig Alimentos.