@article{10_1017_S0017089512000390,
     author = {MATVEEV, VLADIMIR S. and ROSEMANN, STEFAN},
     title = {TWO {REMARKS} {ON} {PQ\ensuremath{\varepsilon}-PROJECTIVITY} {OF} {RIEMANNIAN} {METRICS}},
     journal = {Glasgow mathematical journal},
     pages = {131--138},
     year = {2013},
     volume = {55},
     number = {1},
     doi = {10.1017/S0017089512000390},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089512000390/}
}