@article{behr2019operator,
 author = {Behr, Nicolas and Dattoli, Giuseppe and Lattanzi, Ambra},
 doi = {10.3390/axioms8010035},
 journal = {Axioms},
 number = {1},
 pages = {35},
 publisher = {MDPI AG},
 title = {Operator {{Ordering}} and {{Solution}} of {{Pseudo-Evolutionary Equations}}},
 volume = {8},
 year = {2019}
}