@article{janet1920systemes,
    title = {Sur les syst{\`e}mes d'{\'e}quations aux d{\'e}riv{\'e}es partielles},
    author = {Janet, Maurice},
    journal = {Journal de math{\'e}matiques pures et appliqu{\'e}es},
    volume = {3},
    pages = {65--151},
    year = {1920},
    date-added = {2024-2-14 20:20:41 +0100}
}

@article{janet1920systemes, title = {Sur les syst{`e}mes d'{\'e}quations aux d{\'e}riv{\'e}es partielles}, author = {Janet, Maurice}, journal = {Journal de math{\'e}matiques pures et appliqu{\'e}es}, volume = {3}, pages = {65--151}, year = {1920}, date-added = {2024-2-14 20:20:41 +0100} }