@article{10_4153_CMB_1998_056_x,
     author = {Long, D. D. and Reid, A. W.},
     title = {Free {Products} with {Amalgamation} and {p-Adic} {Lie} {Groups}},
     journal = {Canadian mathematical bulletin},
     pages = {423--433},
     year = {1998},
     volume = {41},
     number = {4},
     doi = {10.4153/CMB-1998-056-x},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1998-056-x/}
}