1. Time and order of eruption of primary teeth. A longitudinal study;Lysell;Odont Revy,1962
2. Eruption of the decidous teeth as regards time and order;Lysell;Int Dent J,1964
3. Relations between the times of eruption of primary and permanent teeth. A longitudinal study;Lysell;Acta Odont Scand,1969
4. A longitudinal study on the effect of unilateral extraction of primary molars;Rönnerman;Scand J Dent Res,1977
5. Facial and dental arch morphology in children with and without early loss of deciduous molars;Rönnerman;Am J Orthod,1978