Résumé : The results of a search for final-state interactions between the decay products of some light hypernuclei are presented. The following π- mesonic decays have been considered: Λ3H → π- + 1H, Λ4H → π- + 1H + 3H, Λ4He → π- + 1 H + 3He, Λ5He → π- + 1H + 4He, Λ7Li → π- + 3He + 4He, Λ7Li → π- + 1H + 2H + 4He, Λ7Li → π- + 1H + 6Li, Λ8Li → π- + 4He + 4He, Λ9Li → π- + 4He + 4He + n, Λ9Be → π- + 1H + 4He + 4He and Λ12B → π- + 4He + 4He + 4He. © 1968.