Sentence examples for there were several papers from inspiring English sources

In recent years, there were several papers published on this subject.

There were several papers on the existence of time-periodic solutions [18] and traveling waves [19 24] for the Boussinesq system (1.1).

For the second-order problem there are several papers dealing with this subject.

There are several papers concerning rough kernels associated to surfaces as above [4 6].

There are several papers devoted to the study of properties of the parameters.

There are several papers on the two-dimensional systems of difference equations with rational nonlinearities.

There are several papers [8, 9] considering the limit cycles for piecewise smooth Liénard systems.

After that, there are several papers considering with stochastic evolution equations in an infinite lattice [26, 27, 31].

There are several papers studying the existence and nonexistence of solutions of semilinear equations with Kohn Laplacian in the past two decades.

There are several papers that have taken the 'platform' as an analyzing point to gain a few useful insights into the practices adopted by software developers.

Mathematical models have played an important role in understanding the dynamics of HIV infection; there are several papers introducing the Human Immunodeficiency Virus (HIV) [1, 2].