7 Local and boundary properties of phases
Linear Differential Transformations of the Second Order, GDML_Books, (1971), p. [65]-86 / Harvested from
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@inbook{401676,
     title = {7 Local and boundary properties of phases},
     booktitle = {Linear Differential Transformations of the Second Order},
     series = {GDML\_Books},
     publisher = {The English Universities Press, Ltd.},
     address = {London},
     year = {1971},
     pages = {[65]-86},
     url = {http://dml.mathdoc.fr/item/401676}
}

 (éd.). 7 Local and boundary properties of phases, dans Linear Differential Transformations of the Second Order, GDML_Books,  (1971), pp. [65]-86. http://gdmltest.u-ga.fr/item/401676/