A method wherein a plurality of information sources, assumed to be useful to the analysis of a situation having to be decided on, are referenced in a database of a device, including a digital processing system with display means and interface means, said method comprising the following steps: - the device visually presents, to at least one operator, at least one piece of information accessible from an information source by displaying an information container stored in the database in association with said information source; - said at least one operator carries out, with the interface means, during a work session, interactions on information containers presented to said at least one operator in a visual form by the display means; - any interaction of said at least one operator with an information container, detected by the interface means, is memorised by the digital processing system; - any modification of an information container, resulting from one of said interactions or from an independent action of the digital processing system, triggers the creation, by the digital processing system, of a state table in a database of the states of the information containers, said state table including a set of variables defining a state of the display of said information container between a state start date and a state end date; - said memorised interactions are interpreted to determine an index of interest of each of the information sources at the origin of said information containers, the index of interest of said each information source being established through a processing of the variables of the state tables, created during the work session, relating to the information containers of said considered each information source, by allocation of a weight assigned to each of the variables of the state table; - on a query of an operator or of the digital processing system, the device establishes a list of the information containers of the database organised by values, or value ranges, of the indices of interest determined for each of the information sources during the work session. - the device visually presents, to at least one operator, at least one piece of information accessible from an information source by displaying an information container stored in the database in association with said information source; - said at least one operator carries out, with the interface means, during a work session, interactions on information containers presented to said at least one operator in a visual form by the display means; - any interaction of said at least one operator with an information container, detected by the interface means, is memorised by the digital processing system; - any modification of an information container, resulting from one of said interactions or from an independent action of the digital processing system, triggers the creation, by the digital processing system, of a state table in a database of the states of the information containers, said state table including a set of variables defining a state of the display of said information container between a state start date and a state end date; - said memorised interactions are interpreted to determine an index of interest of each of the information sources at the origin of said information containers, the index of interest of said each information source being established through a processing of the variables of the state tables, created during the work session, relating to the information containers of said considered each information source, by allocation of a weight assigned to each of the variables of the state table; - on a query of an operator or of the digital processing system, the device establishes a list of the information containers of the database organised by values, or value ranges, of the indices of interest determined for each of the information sources during the work session.