@Article{JPDE-1-43,
author = {},
title = {On a Class of Partial Differential Equations of Mixed Type},
journal = {Journal of Partial Differential Equations},
year = {1988},
volume = {1},
number = {1},
pages = {43--52},
abstract = {},
issn = {2079-732X},
doi = {https://doi.org/},
url = {http://global-sci.org/intro/article_detail/jpde/5851.html}
}