“…the concept of ‘habitual residence’, for the purposes of Articles 8 and 10 of the Regulation, must be interpreted as meaning that such residence corresponds to the place which reflects some degree of integration by the child in a social and family environment. To that end, where the situation concerned is that of an infant who has been staying with her mother only a few days in a Member State - other than that of her habitual residence - to which she has been removed, the factors to be taken into consideration included, first, the duration, regularity, conditions and reasons for the stay in the territory of that Member State and for the mother’s move to that State and, second, with particular reference to the child’s age, the mother’s geographic and family origins and the family and social connections which the mother and child have with that Member State. It is for the national court to establish the habitual residence of the child, taking account of all the circumstances of fact specific to each individual case”
“(38) In addition to the physical presence of the child in a Member State other factors must be chosen which are capable of showing that that presence is not in any way temporary or intermittent and that the residence of the child reflects some degree of integration in a social and family environment. (39) In particular, the duration, regularity, conditions and reasons for the stay on the territory of a Member State and the family's move to that State, the child's nationality, the place and conditions of attendance at school, linguistic knowledge and the family and social relationships of the child in that State must be taken into consideration. (40) As the Advocate General pointed out…the parents' intention to settle permanently with the child in another Member State, manifested by certain tangible steps such as the purchase or lease of a residence in the host Member State, may constitute an indicator of the transfer of habitual residence. Another indicator may be constituted by lodging an application for social housing with the relevant services of that State. (41) By contrast, the fact that the children are staying in a Member State where, for a short period, they carry on a peripatetic life, is liable to constitute an indicator that they do not habitually reside in that State.”