@article{MZ_1978__160_172666,
     author = {Narain Datt Gupta and Chander Kanta Gupta},
     title = {Generalized {Magnus} {Embeddings} and {Some} {Applications.}},
     journal = {Mathematische Zeitschrift},
     pages = {75--88},
     publisher = {mathdoc},
     volume = {160},
     year = {1978},
     zbl = {0362.20031},
     url = {http://geodesic.mathdoc.fr/item/MZ_1978__160_172666/}
}