Reference:

Katri Huitu, Pran N. Pandita, and Kai Puolamäki. Constraining the vacuum expectation values in naturally R-parity conserving supersymmetric models. Physics Letters B, 415(2):156–160, 1997.

Suggested BibTeX entry:

@article{Huitu97plb,
    author = {Katri Huitu and Pran N. Pandita and Kai Puolam\"aki},
    journal = {Physics Letters B},
    number = {2},
    pages = {156--160},
    title = {Constraining the vacuum expectation values in naturally {R}-parity conserving supersymmetric models},
    volume = {415},
    year = {1997},
}