The Spanish Association of Project Engineering is pleased to publish the following selection of the best papers presented at the 13th International Congress on Project Engineering. After having organized an annual Congress with an array of universities over the last 16 years —first at the national and then at the international level— by the end of 2008 the AEIPRO Directive Board decided to establish a Scientific Committee to evaluate the papers presented at the Congress. The Scientific Committee has also chosen the works to be published in the selected proceedings of the Congress. The procedures to establish the Scientific Committee and evaluate the submitted papers are explained below in detail. It is the hope of the Committee that the compiled works contribute to the improvement of project engineering research and improve the transfer of results to the job of Project Engineers.